821194492137

Names of 821194492137

• Cardinal: 821194492137 can be written as Eight hundred twenty-one billion, one hundred ninety-four million, four hundred ninety-two thousand, one hundred thirty-seven.

Scientific notation

• Scientific notation: 8.21194492137 × 10¹¹

Factors of 821194492137

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 487593

Divisors of 821194492137

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 17 29 51 67 87 201 289 493 867 1139 1479 1943 3417 5829 8381 19363 25143 33031 58089 99093 487477 561527 1462431 1684581 8287109 14136833 24861327 32660959 42410499 97982877 140880853 240326161 422642559 555236303 720978483 947167811 1665708909 2841503433 4085544737 9439017151 12256634211 16101852787 28317051453 48305558361 273731497379 821194492137
• Sum of all divisors σ(n): 1221190887360
• Sum of proper divisors (its aliquot sum) s(n): 399996395223
• 821194492137 is a deficient number, because the sum of its proper divisors (399996395223) is less than itself. Its deficiency is 421198096914

Bases of 821194492137

• Binary: 1011111100110011000000011000100011101001₂
• Hexadecimal: 0xBF330188E9
• Base-36: AH91ZXEX

Squares and roots of 821194492137

• 821194492137 squared (821194492137²) is 674360393916145354826769
• 821194492137 cubed (821194492137³) is 553781041199276249221640230567615353
• The square root of 821194492137 is 906197.8217458923
• The cube root of 821194492137 is 9364.4442672447

Scales and comparisons

• 821,194,492,137 seconds is equal to 26,111 years, 23 weeks, 21 hours, 8 minutes, 57 seconds.
• To count from 1 to 821,194,492,137 would take you about fifty-two thousand, two hundred twenty-two 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 821194492137 cubic inches would be around 780.4 feet tall.

Recreational maths with 821194492137

• 821194492137 backwards is 731294491128
• 821194492137 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 821194492137's digits is 51
• More coming soon!