18813643443

Names of 18813643443

• Cardinal: 18813643443 can be written as Eighteen billion, eight hundred thirteen million, six hundred forty-three thousand, four hundred forty-three.

Scientific notation

• Scientific notation: 1.8813643443 × 10¹⁰

Factors of 18813643443

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 429

Divisors of 18813643443

• Number of divisors d(n): 72
• Complete list of divisors:
  1 3 7 9 21 27 49 63 81 147 189 243 419 441 567 729 1257 1323 1701 2187 2933 3771 3969 5103 8799 11313 11907 15309 20531 26397 33939 35721 61593 79191 101817 107163 175561 184779 237573 305451 526683 554337 712719 916353 1228927 1580049 1663011 2138157 3686781 4740147 4989033 6414471 8602489 11060343 14220441 14967099 25807467 33181029 42661323 44901297 77422401 99543087 127983969 232267203 298629261 383951907 696801609 895887783 2090404827 2687663349 6271214481 18813643443
• Sum of all divisors σ(n): 32901407760
• Sum of proper divisors (its aliquot sum) s(n): 14087764317
• 18813643443 is a deficient number, because the sum of its proper divisors (14087764317) is less than itself. Its deficiency is 4725879126

Bases of 18813643443

• Binary: 10001100001011000010110101010110011₂
• Hexadecimal: 0x461616AB3
• Base-36: 8N55O6R

Squares and roots of 18813643443

• 18813643443 squared (18813643443²) is 353953179600336894249
• 18813643443 cubed (18813643443³) is 6659148916516879571078683259307
• The square root of 18813643443 is 137162.8355021869
• The cube root of 18813643443 is 2659.6488617749

Scales and comparisons

• 18,813,643,443 seconds is equal to 598 years, 11 weeks, 1 day, 12 hours, 4 minutes, 3 seconds.
• To count from 1 to 18,813,643,443 would take you about one thousand, one hundred ninety-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 18813643443 cubic inches would be around 221.6 feet tall.

Recreational maths with 18813643443

• 18813643443 backwards is 34434631881
• The number of decimal digits it has is: 11
• The sum of 18813643443's digits is 45
• More coming soon!