1998438940135168

Names of 1998438940135168

• Cardinal: 1998438940135168 can be written as One quadrillion, nine hundred ninety-eight trillion, four hundred thirty-eight billion, nine hundred forty million, one hundred thirty-five thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 1.998438940135168 × 10¹⁵

Factors of 1998438940135168

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 264375546

Divisors of 1998438940135168

• Number of divisors d(n): 36
• Complete list of divisors:
  1 2 4 8 16 32 64 128 256 29531 59062 118124 236248 472496 944992 1889984 3779968 7559936 264346013 528692026 1057384052 2114768104 4229536208 8459072416 16918144832 33836289664 67672579328 7806402109903 15612804219806 31225608439612 62451216879224 124902433758448 249804867516896 499609735033792 999219470067584 1998438940135168
• Sum of all divisors σ(n): 3989206574063928
• Sum of proper divisors (its aliquot sum) s(n): 1990767633928760
• 1998438940135168 is a deficient number, because the sum of its proper divisors (1990767633928760) is less than itself. Its deficiency is 7671306206408

Bases of 1998438940135168

• Binary: 111000110011001000111010011001000011100111100000000₂
• Hexadecimal: 0x71991D321CF00
• Base-36: JODY6ASIKG

Squares and roots of 1998438940135168

• 1998438940135168 squared (1998438940135168²) is 3993758197448573589302110388224
• 1998438940135168 cubed (1998438940135168³) is 7981281899265266416349633618924146699515461632
• The square root of 1998438940135168 is 44703902.9631101449
• The cube root of 1998438940135168 is 125959.3162540799

Scales and comparisons

• 1,998,438,940,135,168 seconds is equal to 63,544,176 years, 37 weeks, 2 days, 15 hours, 19 minutes, 28 seconds.
• To count from 1 to 1,998,438,940,135,168 would take you about one hundred ninety million, six hundred thirty-two thousand, five hundred thirty 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 1998438940135168 cubic inches would be around 10496.6 feet tall.

Recreational maths with 1998438940135168

• 1998438940135168 backwards is 8615310498348991
• The number of decimal digits it has is: 16
• The sum of 1998438940135168's digits is 79
• More coming soon!