13945813021

Names of 13945813021

• Cardinal: 13945813021 can be written as Thirteen billion, nine hundred forty-five million, eight hundred thirteen thousand and twenty-one.

Scientific notation

• Scientific notation: 1.3945813021 × 10¹⁰

Factors of 13945813021

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 134

Divisors of 13945813021

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 19 41 49 67 133 287 343 361 469 779 931 1273 1681 2009 2527 2747 3283 5453 6517 8911 11767 14063 14801 17689 19229 22981 24187 31939 38171 52193 62377 82369 103607 112627 123823 134603 169309 223573 267197 365351 436639 576583 606841 725249 788389 942221 991667 1185163 1565011 2139913 2557457 4247887 5076743 5518723 6941669 8296141 10955077 14979391 17902199 29735209 38631061 40658347 48591683 104855737 208146463 284608429 340141781 733990159 1992259003 13945813021
• Sum of all divisors σ(n): 17855793600
• Sum of proper divisors (its aliquot sum) s(n): 3909980579
• 13945813021 is a deficient number, because the sum of its proper divisors (3909980579) is less than itself. Its deficiency is 10035832442

Bases of 13945813021

• Binary: 1100111111001111000011100000011101₂
• Hexadecimal: 0x33F3C381D
• Base-36: 6EMZ671

Squares and roots of 13945813021

• 13945813021 squared (13945813021²) is 194485700816693146441
• 13945813021 cubed (13945813021³) is 2712261218847749615798357608261
• The square root of 13945813021 is 118092.3918844901
• The cube root of 13945813021 is 2407.0287597693

Scales and comparisons

• 13,945,813,021 seconds is equal to 443 years, 22 weeks, 3 days, 20 hours, 57 minutes, 1 second.
• To count from 1 to 13,945,813,021 would take you about eight hundred eighty-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 13945813021 cubic inches would be around 200.6 feet tall.

Recreational maths with 13945813021

• 13945813021 backwards is 12031854931
• The number of decimal digits it has is: 11
• The sum of 13945813021's digits is 37
• More coming soon!