18646994916

Names of 18646994916

• Cardinal: 18646994916 can be written as Eighteen billion, six hundred forty-six million, nine hundred ninety-four thousand, nine hundred sixteen.

Scientific notation

• Scientific notation: 1.8646994916 × 10¹⁰

Factors of 18646994916

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 2085

Divisors of 18646994916

• Number of divisors d(n): 81
• Complete list of divisors:
  1 2 3 4 6 9 11 12 18 22 33 36 44 66 99 121 132 198 242 363 396 484 726 1089 1452 2069 2178 4138 4356 6207 8276 12414 18621 22759 24828 37242 45518 68277 74484 91036 136554 204831 250349 273108 409662 500698 751047 819324 1001396 1502094 2253141 3004188 4280761 4506282 8561522 9012564 12842283 17123044 25684566 38526849 47088371 51369132 77053698 94176742 141265113 154107396 188353484 282530226 423795339 517972081 565060452 847590678 1035944162 1553916243 1695181356 2071888324 3107832486 4661748729 6215664972 9323497458 18646994916
• Sum of all divisors σ(n): 51835103593
• Sum of proper divisors (its aliquot sum) s(n): 33188108677
• 18646994916 is an abundant number, because the sum of its proper divisors (33188108677) is greater than itself. Its abundance is 14541113761

Bases of 18646994916

• Binary: 10001010111011100101000111111100100₂
• Hexadecimal: 0x457728FE4
• Base-36: 8KDXTD0

Squares and roots of 18646994916

• 18646994916 squared (18646994916²) is 347710419397329847056
• 18646994916 cubed (18646994916³) is 6483754422742237442028289567296
• 18646994916 is a perfect square number. Its square root is 136554
• The cube root of 18646994916 is 2651.7726322415

Scales and comparisons

• 18,646,994,916 seconds is equal to 592 years, 47 weeks, 4 days, 16 hours, 48 minutes, 36 seconds.
• To count from 1 to 18,646,994,916 would take you about one thousand, one hundred eighty-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 18646994916 cubic inches would be around 221 feet tall.

Recreational maths with 18646994916

• 18646994916 backwards is 61949964681
• The number of decimal digits it has is: 11
• The sum of 18646994916's digits is 63
• More coming soon!