13801187491

Names of 13801187491

• Cardinal: 13801187491 can be written as Thirteen billion, eight hundred one million, one hundred eighty-seven thousand, four hundred ninety-one.

Scientific notation

• Scientific notation: 1.3801187491 × 10¹⁰

Factors of 13801187491

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 1308

Divisors of 13801187491

• Number of divisors d(n): 64
• Complete list of divisors:
  1 7 13 19 67 91 109 133 247 469 763 871 1093 1273 1417 1729 2071 6097 7303 7651 8911 9919 14209 14497 16549 20767 26923 51121 73231 94939 99463 115843 119137 138757 145369 188461 269971 512617 664573 833959 952003 971299 1391389 1548781 1803841 1889797 2263603 6664021 7982179 9739723 10841467 12626887 15845221 18088057 29426839 55875253 103768327 126616399 151661401 205987873 726378289 1061629807 1971598213 13801187491
• Sum of all divisors σ(n): 18330188800
• Sum of proper divisors (its aliquot sum) s(n): 4529001309
• 13801187491 is a deficient number, because the sum of its proper divisors (4529001309) is less than itself. Its deficiency is 9272186182

Bases of 13801187491

• Binary: 1100110110100111010110100010100011₂
• Hexadecimal: 0x3369D68A3
• Base-36: 6C8VCF7

Squares and roots of 13801187491

• 13801187491 squared (13801187491²) is 190472776161734875081
• 13801187491 cubed (13801187491³) is 2628750495739378350826344811771
• The square root of 13801187491 is 117478.4554333261
• The cube root of 13801187491 is 2398.6791048035

Scales and comparisons

• 13,801,187,491 seconds is equal to 438 years, 43 weeks, 2 days, 23 hours, 11 minutes, 31 seconds.
• To count from 1 to 13,801,187,491 would take you about eight hundred seventy-seven 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 13801187491 cubic inches would be around 199.9 feet tall.

Recreational maths with 13801187491

• 13801187491 backwards is 19478110831
• The number of decimal digits it has is: 11
• The sum of 13801187491's digits is 43
• More coming soon!