18129884994

Names of 18129884994

• Cardinal: 18129884994 can be written as Eighteen billion, one hundred twenty-nine million, eight hundred eighty-four thousand, nine hundred ninety-four.

Scientific notation

• Scientific notation: 1.8129884994 × 10¹⁰

Factors of 18129884994

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2894

Divisors of 18129884994

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 6 9 13 18 26 27 39 54 78 117 169 234 338 351 507 702 1014 1153 1521 1723 2306 3042 3446 3459 4563 5169 6918 9126 10338 10377 14989 15507 20754 22399 29978 31014 31131 44798 44967 46521 62262 67197 89934 93042 134394 134901 194857 201591 269802 291187 389714 403182 404703 582374 584571 604773 809406 873561 1169142 1209546 1747122 1753713 1986619 2620683 3507426 3973238 5241366 5261139 5959857 7862049 10522278 11919714 15724098 17879571 25826047 35759142 51652094 53638713 77478141 107277426 154956282 232434423 335738611 464868846 671477222 697303269 1007215833 1394606538 2014431666 3021647499 6043294998 9064942497 18129884994
• Sum of all divisors σ(n): 43689332160
• Sum of proper divisors (its aliquot sum) s(n): 25559447166
• 18129884994 is an abundant number, because the sum of its proper divisors (25559447166) is greater than itself. Its abundance is 7429562172

Bases of 18129884994

• Binary: 10000111000101000000001011101000010₂
• Hexadecimal: 0x438A01742
• Base-36: 8BU2CSI

Squares and roots of 18129884994

• 18129884994 squared (18129884994²) is 328692729895666380036
• 18129884994 cubed (18129884994³) is 5959161391372337089044977579784
• The square root of 18129884994 is 134647.2613683621
• The cube root of 18129884994 is 2627.0299035107

Scales and comparisons

• 18,129,884,994 seconds is equal to 576 years, 24 weeks, 4 days, 15 hours, 9 minutes, 54 seconds.
• To count from 1 to 18,129,884,994 would take you about one thousand, one hundred fifty-two 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 18129884994 cubic inches would be around 218.9 feet tall.

Recreational maths with 18129884994

• 18129884994 backwards is 49948892181
• The number of decimal digits it has is: 11
• The sum of 18129884994's digits is 63
• More coming soon!