18181582218

Names of 18181582218

• Cardinal: 18181582218 can be written as Eighteen billion, one hundred eighty-one million, five hundred eighty-two thousand, two hundred eighteen.

Scientific notation

• Scientific notation: 1.8181582218 × 10¹⁰

Factors of 18181582218

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 9151

Divisors of 18181582218

• Number of divisors d(n): 84
• Complete list of divisors:
  1 2 3 6 9 18 27 37 54 74 81 111 162 222 243 333 486 666 729 999 1369 1458 1998 2738 2997 4107 5994 8214 8991 9109 12321 17982 18218 24642 26973 27327 36963 53946 54654 73926 81981 110889 163962 221778 245943 332667 337033 491886 665334 674066 737829 998001 1011099 1475658 1996002 2022198 2213487 3033297 4426974 6066594 6640461 9099891 12470221 13280922 18199782 24940442 27299673 37410663 54599346 74821326 81899019 112231989 163798038 224463978 245697057 336695967 491394114 673391934 1010087901 2020175802 3030263703 6060527406 9090791109 18181582218
• Sum of all divisors σ(n): 42029467830
• Sum of proper divisors (its aliquot sum) s(n): 23847885612
• 18181582218 is an abundant number, because the sum of its proper divisors (23847885612) is greater than itself. Its abundance is 5666303394

Bases of 18181582218

• Binary: 10000111011101101001110110110001010₂
• Hexadecimal: 0x43BB4ED8A
• Base-36: 8COUEMI

Squares and roots of 18181582218

• 18181582218 squared (18181582218²) is 330569931949893799524
• 18181582218 cubed (18181582218³) is 6010284396545659172414015264232
• The square root of 18181582218 is 134839.0975125539
• The cube root of 18181582218 is 2629.5245188991

Scales and comparisons

• 18,181,582,218 seconds is equal to 578 years, 6 weeks, 23 hours, 30 minutes, 18 seconds.
• To count from 1 to 18,181,582,218 would take you about one thousand, one hundred fifty-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 18181582218 cubic inches would be around 219.1 feet tall.

Recreational maths with 18181582218

• 18181582218 backwards is 81228518181
• The number of decimal digits it has is: 11
• The sum of 18181582218's digits is 45
• More coming soon!