18813994326640

Names of 18813994326640

• Cardinal: 18813994326640 can be written as Eighteen trillion, eight hundred thirteen billion, nine hundred ninety-four million, three hundred twenty-six thousand, six hundred forty.

Scientific notation

• Scientific notation: 1.881399432664 × 10¹³

Factors of 18813994326640

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3221574451

Divisors of 18813994326640

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 4 5 8 10 16 20 40 73 80 146 292 365 584 730 1168 1460 2920 5840 3221574371 6443148742 12886297484 16107871855 25772594968 32215743710 51545189936 64431487420 128862974840 235174929083 257725949680 470349858166 940699716332 1175874645415 1881399432664 2351749290830 3762798865328 4703498581660 9406997163320 18813994326640
• Sum of all divisors σ(n): 44341749656208
• Sum of proper divisors (its aliquot sum) s(n): 25527755329568
• 18813994326640 is an abundant number, because the sum of its proper divisors (25527755329568) is greater than itself. Its abundance is 6713761002928

Bases of 18813994326640

• Binary: 100010001110001111001011100101101101001110000₂
• Hexadecimal: 0x111C7972DA70
• Base-36: 6O312GJ1S

Squares and roots of 18813994326640

• 18813994326640 squared (18813994326640²) is 353966382522842107013689600
• 18813994326640 cubed (18813994326640³) is 6659521512606035451564059887213970944000
• The square root of 18813994326640 is 4337510.1529149185
• The cube root of 18813994326640 is 26596.6539625563

Scales and comparisons

• 18,813,994,326,640 seconds is equal to 598,226 years, 42 weeks, 5 days, 23 hours, 10 minutes, 40 seconds.
• To count from 1 to 18,813,994,326,640 would take you about one million, four hundred ninety-five thousand, five hundred sixty-seven 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 18813994326640 cubic inches would be around 2216.4 feet tall.

Recreational maths with 18813994326640

• 18813994326640 backwards is 04662349931881
• The number of decimal digits it has is: 14
• The sum of 18813994326640's digits is 64
• More coming soon!