Information About

1000000000 (number)




  Next 9814072356
  Range empty
  Cardinal One billion
  Ordinal Billionth or One billionth
  Factorization <math>2^9 imes 5^9</math>
  Greek Prefix Giga
  Bin 101111101011110000100000000
  Hex 5F5E100


One thousand million (1,000,000,000) is the Natural Number following 999999999 and preceding 1000000001. (It is usually called a " Billion ." A " Milliard " can sometimes refer to 1,000,000,000, however).

In Scientific Notation , it is written as 109. Physical quantities can be expressed using the SI Prefix giga.

See Orders Of Magnitude (numbers) for larger numbers.


SELECTED 10-DIGIT NUMBERS (1000000001 - 9999999999)


  • 1023456789 - smallest Pandigital Number

  • 1073676287 - Carol Number

  • 1073807359 - Kynea Number

  • 1111111111 - Repunit

  • 1129760415 - Motzkin Number

  • 1134903170 - Fibonacci Number

  • 1162261467 = 3^19

  • 1220703125 = 5^12

  • 1234567890 - pandigital number with the digits in order

  • 1311738121 - Pell Number

  • 1406818759 - Wedderburn-Etherington Number

  • 1836311903 - Fibonacci Prime

  • 2222222222 - Repdigit

  • 2971215073 - Fibonacci prime

  • 3166815962 - Pell number

  • 3192727797 - Motzkin number

  • 3323236238 - Wedderburn-Etherington number

  • 3333333333 - repdigit

  • 3486784401 = 3^20

  • 4294836223 - Carol number

  • 4295098367 - Kynea number

  • 4444444444 - repdigit

  • 4807526976 - Fibonacci number

  • 5555555555 - repdigit

  • 5784634181 - Alternating Factorial

  • 6210001000 - the only Self-descriptive Number in base 10

  • 6227020800 = 13!

  • 6666666666 - repdigit

  • 7645370045 - Pell number

  • 7777777777 - repdigit

  • 7778742049 - Fibonacci number

  • 7862958391 - Wedderburn-Etherington number

  • 8888888888 - repdigit

  • 9043402501 - Motzkin number

  • 9814072356 - largest square pandigital number, largest pandigital pure power

  • 9876543210 - largest pandigital number without redundant digits

  • 9999999999 - repdigit