981821375161

Names of 981821375161

• Cardinal: 981821375161 can be written as Nine hundred eighty-one billion, eight hundred twenty-one million, three hundred seventy-five thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 9.81821375161 × 10¹¹

Factors of 981821375161

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 461

Divisors of 981821375161

• Number of divisors d(n): 45
• Complete list of divisors:
  1 11 19 121 209 361 431 1331 2299 3971 4741 8189 14641 25289 43681 52151 90079 155591 185761 278179 480491 573661 990869 1711501 2043371 3529459 5285401 6310271 10899559 18826511 22477081 38824049 67059721 119895149 207091621 247247891 427064539 737656931 2278007831 2719726801 4697709929 8114226241 51674809219 89256488651 981821375161
• Sum of all divisors σ(n): 1142481178965
• Sum of proper divisors (its aliquot sum) s(n): 160659803804
• 981821375161 is a deficient number, because the sum of its proper divisors (160659803804) is less than itself. Its deficiency is 821161571357

Bases of 981821375161

• Binary: 1110010010011001000111010100001010111001₂
• Hexadecimal: 0xE4991D42B9
• Base-36: CJ1J3HKP

Squares and roots of 981821375161

• 981821375161 squared (981821375161²) is 963973212723037107775921
• 981821375161 cubed (981821375161³) is 946449505334099474580986922463298281
• 981821375161 is a perfect square number. Its square root is 990869
• The cube root of 981821375161 is 9939.0336496343

Scales and comparisons

• 981,821,375,161 seconds is equal to 31,218 years, 45 weeks, 6 days, 7 hours, 46 minutes, 1 second.
• To count from 1 to 981,821,375,161 would take you about sixty-two thousand, four hundred thirty-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 981821375161 cubic inches would be around 828.3 feet tall.

Recreational maths with 981821375161

• 981821375161 backwards is 161573128189
• The number of decimal digits it has is: 12
• The sum of 981821375161's digits is 52
• More coming soon!