813491487949

Names of 813491487949

• Cardinal: 813491487949 can be written as Eight hundred thirteen billion, four hundred ninety-one million, four hundred eighty-seven thousand, nine hundred forty-nine.

Scientific notation

• Scientific notation: 8.13491487949 × 10¹¹

Factors of 813491487949

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 533

Divisors of 813491487949

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 19 49 73 127 133 307 511 889 931 1387 2149 2413 3577 5833 6223 9271 9709 15043 16891 22411 38989 40831 64897 67963 94249 118237 156877 176149 272923 285817 425809 454279 659743 740791 1098139 1233043 1790731 1910461 2846197 2980663 4618201 5185537 6880177 8631301 11969623 12535117 19923379 20864641 36298759 48161239 54077743 83787361 87745819 130723363 139463653 227422837 337128673 378544201 586511527 873782479 915063541 1591959859 2649809407 6116477353 6405444787 11143719013 16601867101 42815341471 116213069707 813491487949
• Sum of all divisors σ(n): 1021034050560
• Sum of proper divisors (its aliquot sum) s(n): 207542562611
• 813491487949 is a deficient number, because the sum of its proper divisors (207542562611) is less than itself. Its deficiency is 605948925338

Bases of 813491487949

• Binary: 1011110101100111110111110000010011001101₂
• Hexadecimal: 0xBD67DF04CD
• Base-36: ADPNTTCD

Squares and roots of 813491487949

• 813491487949 squared (813491487949²) is 661768400965478012226601
• 813491487949 cubed (813491487949³) is 538342961179037156348260462048731349
• The square root of 813491487949 is 901937.6297444297
• The cube root of 813491487949 is 9335.0719797583

Scales and comparisons

• 813,491,487,949 seconds is equal to 25,866 years, 26 weeks, 4 days, 17 hours, 45 minutes, 49 seconds.
• To count from 1 to 813,491,487,949 would take you about fifty-one thousand, seven hundred thirty-three 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 813491487949 cubic inches would be around 777.9 feet tall.

Recreational maths with 813491487949

• 813491487949 backwards is 949784194318
• The number of decimal digits it has is: 12
• The sum of 813491487949's digits is 67
• More coming soon!