18331751438

Names of 18331751438

• Cardinal: 18331751438 can be written as Eighteen billion, three hundred thirty-one million, seven hundred fifty-one thousand, four hundred thirty-eight.

Scientific notation

• Scientific notation: 1.8331751438 × 10¹⁰

Factors of 18331751438

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 64066

Divisors of 18331751438

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 7 11 13 14 22 26 77 91 121 143 154 169 182 242 286 338 847 1001 1183 1573 1694 1859 2002 2366 3146 3718 11011 13013 20449 22022 26026 40898 64033 128066 143143 286286 448231 704363 832429 896462 1408726 1664858 4930541 5827003 7747993 9156719 9861082 10821577 11654006 15495986 18313438 21643154 54235951 64097033 75751039 100723909 108471902 119037347 128194066 151502078 201447818 238074694 705067363 833261429 1309410817 1410134726 1666522858 2618821634 9165875719 18331751438
• Sum of all divisors σ(n): 37404564624
• Sum of proper divisors (its aliquot sum) s(n): 19072813186
• 18331751438 is an abundant number, because the sum of its proper divisors (19072813186) is greater than itself. Its abundance is 741061748

Bases of 18331751438

• Binary: 10001000100101010000101010000001110₂
• Hexadecimal: 0x444A8540E
• Base-36: 8F691XQ

Squares and roots of 18331751438

• 18331751438 squared (18331751438²) is 336053110784615067844
• 18331751438 cubed (18331751438³) is 6160442096870240578225714559672
• The square root of 18331751438 is 135394.7984155965
• The cube root of 18331751438 is 2636.7441227943

Scales and comparisons

• 18,331,751,438 seconds is equal to 582 years, 46 weeks, 3 days, 1 hour, 10 minutes, 38 seconds.
• To count from 1 to 18,331,751,438 would take you about one thousand, one hundred sixty-five 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 18331751438 cubic inches would be around 219.7 feet tall.

Recreational maths with 18331751438

• 18331751438 backwards is 83415713381
• The number of decimal digits it has is: 11
• The sum of 18331751438's digits is 44
• More coming soon!