18120643218

Names of 18120643218

• Cardinal: 18120643218 can be written as Eighteen billion, one hundred twenty million, six hundred forty-three thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 1.8120643218 × 10¹⁰

Factors of 18120643218

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 292634

Divisors of 18120643218

• Number of divisors d(n): 64
• Complete list of divisors:
  1 2 3 6 9 18 27 31 37 54 62 74 93 111 186 222 279 333 558 666 837 999 1147 1674 1998 2294 3441 6882 10323 20646 30969 61938 292561 585122 877683 1755366 2633049 5266098 7899147 9069391 10824757 15798294 18138782 21649514 27208173 32474271 54416346 64948542 81624519 97422813 163249038 194845626 244873557 292268439 335567467 489747114 584536878 671134934 1006702401 2013404802 3020107203 6040214406 9060321609 18120643218
• Sum of all divisors σ(n): 42690647040
• Sum of proper divisors (its aliquot sum) s(n): 24570003822
• 18120643218 is an abundant number, because the sum of its proper divisors (24570003822) is greater than itself. Its abundance is 6449360604

Bases of 18120643218

• Binary: 10000111000000100110001001010010010₂
• Hexadecimal: 0x438131292
• Base-36: 8BOK9SI

Squares and roots of 18120643218

• 18120643218 squared (18120643218²) is 328357710634049395524
• 18120643218 cubed (18120643218³) is 5950052922278893658878970156232
• The square root of 18120643218 is 134612.9385237541
• The cube root of 18120643218 is 2626.5834482347

Scales and comparisons

• 18,120,643,218 seconds is equal to 576 years, 9 weeks, 2 days, 16 hours, 18 seconds.
• To count from 1 to 18,120,643,218 would take you about one thousand, one hundred fifty-two 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 18120643218 cubic inches would be around 218.9 feet tall.

Recreational maths with 18120643218

• 18120643218 backwards is 81234602181
• The number of decimal digits it has is: 11
• The sum of 18120643218's digits is 36
• More coming soon!