18162643991875839

Names of 18162643991875839

• Cardinal: 18162643991875839 can be written as Eighteen quadrillion, one hundred sixty-two trillion, six hundred forty-three billion, nine hundred ninety-one million, eight hundred seventy-five thousand, eight hundred thirty-nine.

Scientific notation

• Scientific notation: 1.8162643991875839 × 10¹⁶

Factors of 18162643991875839

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 5
• Sum of prime factors: 11506852

Divisors of 18162643991875839

• Number of divisors d(n): 24
• Complete list of divisors:
  1 3 9 61 183 549 5617739 5889049 16853217 17667147 50559651 53001441 342682079 359231989 1028046237 1077695967 3084138711 3233087901 33083140240211 99249420720633 297748262161899 2018071554652871 6054214663958613 18162643991875839
• Sum of all divisors σ(n): 26665020308082000
• Sum of proper divisors (its aliquot sum) s(n): 8502376316206161
• 18162643991875839 is a deficient number, because the sum of its proper divisors (8502376316206161) is less than itself. Its deficiency is 9660267675669678

Bases of 18162643991875839

• Binary: 1000000100001101101010000010111010100010101000011111111₂
• Hexadecimal: 0x4086D4175150FF
• Base-36: 4YU4BGN6WHR

Squares and roots of 18162643991875839

• 18162643991875839 squared (18162643991875839²) is 329881636775623511982633991953921
• 18162643991875839 cubed (18162643991875839³) is 5991522728212946198061629091425583772417641214719
• The square root of 18162643991875839 is 134768853.9384224301
• The cube root of 18162643991875839 is 262861.1216824677

Scales and comparisons

• 18,162,643,991,875,839 seconds is equal to 577,515,898 years, 10 weeks, 1 day, 10 minutes, 39 seconds.
• To count from 1 to 18,162,643,991,875,839 would take you about one billion, seven hundred thirty-two million, five hundred forty-seven thousand, six hundred ninety-four 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 18162643991875839 cubic inches would be around 21905.1 feet tall.

Recreational maths with 18162643991875839

• 18162643991875839 backwards is 93857819934626181
• The number of decimal digits it has is: 17
• The sum of 18162643991875839's digits is 90
• More coming soon!