1997309018

Names of 1997309018

• Cardinal: 1997309018 can be written as One billion, nine hundred ninety-seven million, three hundred nine thousand and eighteen.

Scientific notation

• Scientific notation: 1.997309018 × 10⁹

Factors of 1997309018

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 80208

Divisors of 1997309018

• Number of divisors d(n): 8
• Complete list of divisors:
  1 2 15413 30826 64793 129586 998654509 1997309018
• Sum of all divisors σ(n): 2996204148
• Sum of proper divisors (its aliquot sum) s(n): 998895130
• 1997309018 is a deficient number, because the sum of its proper divisors (998895130) is less than itself. Its deficiency is 998413888

Bases of 1997309018

• Binary: 1110111000011001000010001011010₂
• Hexadecimal: 0x770C845A
• Base-36: X159I2

Squares and roots of 1997309018

• 1997309018 squared (1997309018²) is 3989243313384124324
• 1997309018 cubed (1997309018³) is 7967751644818311610358353832
• The square root of 1997309018 is 44691.2633296487
• The cube root of 1997309018 is 1259.3557254615

Scales and comparisons

• 1,997,309,018 seconds is equal to 63 years, 26 weeks, 3 days, 3 minutes, 38 seconds.
• To count from 1 to 1,997,309,018 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 1997309018 cubic inches would be around 104.9 feet tall.

Recreational maths with 1997309018

• 1997309018 backwards is 8109037991
• The number of decimal digits it has is: 10
• The sum of 1997309018's digits is 47
• More coming soon!