18168722546

Names of 18168722546

• Cardinal: 18168722546 can be written as Eighteen billion, one hundred sixty-eight million, seven hundred twenty-two thousand, five hundred forty-six.

Scientific notation

• Scientific notation: 1.8168722546 × 10¹⁰

Factors of 18168722546

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 338

Divisors of 18168722546

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 13 26 29 58 97 169 194 197 338 377 394 754 1261 2522 2561 2813 4901 5122 5626 5713 9409 9802 11426 16393 18818 19109 32786 33293 36569 38218 66586 73138 74269 122317 148538 244634 248417 272861 475397 496834 545722 554161 950794 965497 1108322 1590121 1853573 1930994 3180242 3229421 3547193 3707146 6458842 7094386 7204093 14408186 24096449 46113509 48192898 53753617 92227018 93653209 107507234 187306418 313253837 626507674 698797021 1397594042 9084361273 18168722546
• Sum of all divisors σ(n): 31002897420
• Sum of proper divisors (its aliquot sum) s(n): 12834174874
• 18168722546 is a deficient number, because the sum of its proper divisors (12834174874) is less than itself. Its deficiency is 5334547672

Bases of 18168722546

• Binary: 10000111010111100001011010001110010₂
• Hexadecimal: 0x43AF0B472
• Base-36: 8CH6S1E

Squares and roots of 18168722546

• 18168722546 squared (18168722546²) is 330102478953528722116
• 18168722546 cubed (18168722546³) is 5997540351853467779767538027336
• The square root of 18168722546 is 134791.4038282855
• The cube root of 18168722546 is 2628.9044262165

Scales and comparisons

• 18,168,722,546 seconds is equal to 577 years, 36 weeks, 6 days, 3 hours, 22 minutes, 26 seconds.
• To count from 1 to 18,168,722,546 would take you about one thousand, one hundred fifty-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 18168722546 cubic inches would be around 219.1 feet tall.

Recreational maths with 18168722546

• 18168722546 backwards is 64522786181
• The number of decimal digits it has is: 11
• The sum of 18168722546's digits is 50
• More coming soon!