18115639980

Names of 18115639980

• Cardinal: 18115639980 can be written as Eighteen billion, one hundred fifteen million, six hundred thirty-nine thousand, nine hundred eighty.

Scientific notation

• Scientific notation: 1.811563998 × 10¹⁰

Factors of 18115639980

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2437

Divisors of 18115639980

• Number of divisors d(n): 96
• Complete list of divisors:
  1 2 3 4 5 6 10 12 15 20 30 60 271 542 813 859 1084 1297 1355 1626 1718 2577 2594 2710 3252 3436 3891 4065 4295 5154 5188 5420 6485 7782 8130 8590 10308 12885 12970 15564 16260 17180 19455 25770 25940 38910 51540 77820 232789 351487 465578 698367 702974 931156 1054461 1114123 1163945 1396734 1405948 1757435 2108922 2228246 2327890 2793468 3342369 3491835 3514870 4217844 4456492 4655780 5272305 5570615 6684738 6983670 7029740 10544610 11141230 13369476 13967340 16711845 21089220 22282460 33423690 66847380 301927333 603854666 905781999 1207709332 1509636665 1811563998 3019273330 3623127996 4528909995 6038546660 9057819990 18115639980
• Sum of all divisors σ(n): 51009530880
• Sum of proper divisors (its aliquot sum) s(n): 32893890900
• 18115639980 is an abundant number, because the sum of its proper divisors (32893890900) is greater than itself. Its abundance is 14778250920

Bases of 18115639980

• Binary: 10000110111110001101011101010101100₂
• Hexadecimal: 0x437C6BAAC
• Base-36: 8BLL19O

Squares and roots of 18115639980

• 18115639980 squared (18115639980²) is 328176411884974400400
• 18115639980 cubed (18115639980³) is 5945125727636389409162767992000
• The square root of 18115639980 is 134594.3534476837
• The cube root of 18115639980 is 2626.3416865485

Scales and comparisons

• 18,115,639,980 seconds is equal to 576 years, 1 week, 18 hours, 13 minutes.
• To count from 1 to 18,115,639,980 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 18115639980 cubic inches would be around 218.9 feet tall.

Recreational maths with 18115639980

• 18115639980 backwards is 08993651181
• The number of decimal digits it has is: 11
• The sum of 18115639980's digits is 51
• More coming soon!