18408420765

Names of 18408420765

• Cardinal: 18408420765 can be written as Eighteen billion, four hundred eight million, four hundred twenty thousand, seven hundred sixty-five.

Scientific notation

• Scientific notation: 1.8408420765 × 10¹⁰

Factors of 18408420765

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 1656

Divisors of 18408420765

• Number of divisors d(n): 96
• Complete list of divisors:
  1 3 5 7 9 15 21 35 45 63 105 127 315 381 421 635 889 1093 1143 1263 1905 2105 2667 2947 3279 3789 4445 5465 5715 6315 7651 8001 8841 9837 13335 14735 16395 18945 22953 26523 38255 40005 44205 49185 53467 68859 114765 132615 138811 160401 267335 344295 374269 416433 460153 481203 694055 802005 971677 1122807 1249299 1380459 1871345 2082165 2300765 2406015 2915031 3221071 3368421 4141377 4858385 5614035 6246495 6902295 8745093 9663213 14575155 16105355 16842105 20706885 28989639 43725465 48316065 58439431 144948195 175318293 292197155 409076017 525954879 876591465 1227228051 2045380085 2629774395 3681684153 6136140255 18408420765
• Sum of all divisors σ(n): 36874346496
• Sum of proper divisors (its aliquot sum) s(n): 18465925731
• 18408420765 is an abundant number, because the sum of its proper divisors (18465925731) is greater than itself. Its abundance is 57504966

Bases of 18408420765

• Binary: 10001001001001110100011010110011101₂
• Hexadecimal: 0x4493A359D
• Base-36: 8GFWCD9

Squares and roots of 18408420765

• 18408420765 squared (18408420765²) is 338869955061283185225
• 18408420765 cubed (18408420765³) is 6238060717384742234441231197125
• The square root of 18408420765 is 135677.6354636239
• The cube root of 18408420765 is 2640.4149162773

Scales and comparisons

• 18,408,420,765 seconds is equal to 585 years, 17 weeks, 1 day, 10 hours, 12 minutes, 45 seconds.
• To count from 1 to 18,408,420,765 would take you about one thousand, one hundred seventy 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 18408420765 cubic inches would be around 220 feet tall.

Recreational maths with 18408420765

• 18408420765 backwards is 56702480481
• 18408420765 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18408420765's digits is 45
• More coming soon!