18189518739

Names of 18189518739

• Cardinal: 18189518739 can be written as Eighteen billion, one hundred eighty-nine million, five hundred eighteen thousand, seven hundred thirty-nine.

Scientific notation

• Scientific notation: 1.8189518739 × 10¹⁰

Factors of 18189518739

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 366

Divisors of 18189518739

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 7 21 31 47 93 127 141 151 217 329 381 453 651 889 961 987 1057 1457 2667 2883 3171 3937 4371 4681 5969 6727 7097 10199 11811 14043 17907 19177 20181 21291 27559 30597 32767 41783 45167 49679 57531 82677 98301 122047 125349 134239 135501 145111 149037 185039 220007 316169 366141 402717 435333 555117 594487 660021 854329 901319 948507 1015777 1295273 1540049 1783461 2562987 2703957 3047331 3885819 4161409 4620147 5736209 6309233 6820217 12484227 17208627 18429097 18927699 20460651 27940889 40153463 47741519 55287291 83822667 120460389 129003679 143224557 195586223 387011037 586758669 866167559 2598502677 6063172913 18189518739
• Sum of all divisors σ(n): 29675225088
• Sum of proper divisors (its aliquot sum) s(n): 11485706349
• 18189518739 is a deficient number, because the sum of its proper divisors (11485706349) is less than itself. Its deficiency is 6703812390

Bases of 18189518739

• Binary: 10000111100001011100000011110010011₂
• Hexadecimal: 0x43C2E0793
• Base-36: 8CTKIHF

Squares and roots of 18189518739

• 18189518739 squared (18189518739²) is 330858591956432150121
• 18189518739 cubed (18189518739³) is 6018158558350677266207990617419
• The square root of 18189518739 is 134868.5239001303
• The cube root of 18189518739 is 2629.9070716103

Scales and comparisons

• 18,189,518,739 seconds is equal to 578 years, 19 weeks, 1 day, 20 hours, 5 minutes, 39 seconds.
• To count from 1 to 18,189,518,739 would take you about one thousand, one hundred fifty-six years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 18189518739 cubic inches would be around 219.2 feet tall.

Recreational maths with 18189518739

• 18189518739 backwards is 93781598181
• The number of decimal digits it has is: 11
• The sum of 18189518739's digits is 60
• More coming soon!