1218189764

Names of 1218189764

• Cardinal: 1218189764 can be written as One billion, two hundred eighteen million, one hundred eighty-nine thousand, seven hundred sixty-four.

Scientific notation

• Scientific notation: 1.218189764 × 10⁹

Factors of 1218189764

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 105

Divisors of 1218189764

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 4 11 22 31 44 61 62 121 122 124 242 244 341 484 671 682 1331 1342 1364 1891 2662 2684 3751 3782 5324 7381 7502 7564 14641 14762 15004 20801 29282 29524 41261 41602 58564 81191 82522 83204 161051 162382 165044 228811 322102 324764 453871 457622 644204 893101 907742 915244 1786202 1815484 2516921 3572404 4992581 5033842 9824111 9985162 10067684 19648222 19970324 27686131 39296444 55372262 110744524 304547441 609094882 1218189764
• Sum of all divisors σ(n): 2460342528
• Sum of proper divisors (its aliquot sum) s(n): 1242152764
• 1218189764 is an abundant number, because the sum of its proper divisors (1242152764) is greater than itself. Its abundance is 23963000

Bases of 1218189764

• Binary: 1001000100111000001100111000100₂
• Hexadecimal: 0x489C19C4
• Base-36: K5A18K

Squares and roots of 1218189764

• 1218189764 squared (1218189764²) is 1483986301114375696
• 1218189764 cubed (1218189764³) is 1807776921933754266117575744
• The square root of 1218189764 is 34902.5753204545
• The cube root of 1218189764 is 1068.0009737351

Scales and comparisons

• 1,218,189,764 seconds is equal to 38 years, 38 weeks, 1 day, 10 hours, 2 minutes, 44 seconds.
• To count from 1 to 1,218,189,764 would take you about seventy-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 1218189764 cubic inches would be around 89 feet tall.

Recreational maths with 1218189764

• 1218189764 backwards is 4679818121
• The number of decimal digits it has is: 10
• The sum of 1218189764's digits is 47
• More coming soon!