1997555550

Names of 1997555550

• Cardinal: 1997555550 can be written as One billion, nine hundred ninety-seven million, five hundred fifty-five thousand, five hundred fifty.

Scientific notation

• Scientific notation: 1.99755555 × 10⁹

Factors of 1997555550

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 58392

Divisors of 1997555550

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 5 6 10 15 25 30 50 75 150 229 458 687 1145 1374 2290 3435 5725 6870 11450 17175 34350 58153 116306 174459 290765 348918 581530 872295 1453825 1744590 2907650 4361475 8722950 13317037 26634074 39951111 66585185 79902222 133170370 199755555 332925925 399511110 665851850 998777775 1997555550
• Sum of all divisors σ(n): 4975656240
• Sum of proper divisors (its aliquot sum) s(n): 2978100690
• 1997555550 is an abundant number, because the sum of its proper divisors (2978100690) is greater than itself. Its abundance is 980545140

Bases of 1997555550

• Binary: 1110111000100000100011101011110₂
• Hexadecimal: 0x7710475E
• Base-36: X1AJQ6

Squares and roots of 1997555550

• 1997555550 squared (1997555550²) is 3990228175335802500
• 1997555550 cubed (1997555550³) is 7970702437408405397578875000
• The square root of 1997555550 is 44694.0214122649
• The cube root of 1997555550 is 1259.4075382941

Scales and comparisons

• 1,997,555,550 seconds is equal to 63 years, 26 weeks, 5 days, 20 hours, 32 minutes, 30 seconds.
• To count from 1 to 1,997,555,550 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 1997555550 cubic inches would be around 105 feet tall.

Recreational maths with 1997555550

• 1997555550 backwards is 0555557991
• The number of decimal digits it has is: 10
• The sum of 1997555550's digits is 51
• More coming soon!