1998157536

Names of 1998157536

• Cardinal: 1998157536 can be written as One billion, nine hundred ninety-eight million, one hundred fifty-seven thousand, five hundred thirty-six.

Scientific notation

• Scientific notation: 1.998157536 × 10⁹

Factors of 1998157536

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 239277

Divisors of 1998157536

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 29 32 36 48 58 72 87 96 116 144 174 232 261 288 348 464 522 696 928 1044 1392 2088 2784 4176 8352 239243 478486 717729 956972 1435458 1913944 2153187 2870916 3827888 4306374 5741832 6938047 7655776 8612748 11483664 13876094 17225496 20814141 22967328 27752188 34450992 41628282 55504376 62442423 68901984 83256564 111008752 124884846 166513128 222017504 249769692 333026256 499539384 666052512 999078768 1998157536
• Sum of all divisors σ(n): 5878225080
• Sum of proper divisors (its aliquot sum) s(n): 3880067544
• 1998157536 is an abundant number, because the sum of its proper divisors (3880067544) is greater than itself. Its abundance is 1881910008

Bases of 1998157536

• Binary: 1110111000110010111011011100000₂
• Hexadecimal: 0x771976E0
• Base-36: X1NG80

Squares and roots of 1998157536

• 1998157536 squared (1998157536²) is 3992633538673591296
• 1998157536 cubed (1998157536³) is 7977910793786983892286406656
• The square root of 1998157536 is 44700.7554298583
• The cube root of 1998157536 is 1259.5340378317

Scales and comparisons

• 1,998,157,536 seconds is equal to 63 years, 27 weeks, 5 days, 19 hours, 45 minutes, 36 seconds.
• To count from 1 to 1,998,157,536 would take you about one hundred twenty-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 1998157536 cubic inches would be around 105 feet tall.

Recreational maths with 1998157536

• 1998157536 backwards is 6357518991
• The number of decimal digits it has is: 10
• The sum of 1998157536's digits is 54
• More coming soon!