6809805821

Names of 6809805821

• Cardinal: 6809805821 can be written as Six billion, eight hundred nine million, eight hundred five thousand, eight hundred twenty-one.

Scientific notation

• Scientific notation: 6.809805821 × 10⁹

Factors of 6809805821

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 98

Divisors of 6809805821

• Number of divisors d(n): 72
• Complete list of divisors:
  1 7 13 17 49 61 91 119 169 221 427 637 793 833 1037 1183 1547 2197 2873 2989 3721 5551 7259 8281 10309 10829 13481 15379 20111 26047 37349 38857 48373 50813 63257 72163 94367 107653 134017 140777 175253 182329 261443 338611 442799 505141 628849 660569 822341 938119 1226771 1830101 2278289 2370277 3099593 4401943 5756387 6566833 8175037 8587397 10690433 15948023 30813601 40294709 57225259 74833031 111636161 138975629 400576813 523831217 972829403 6809805821
• Sum of all divisors σ(n): 9237632040
• Sum of proper divisors (its aliquot sum) s(n): 2427826219
• 6809805821 is a deficient number, because the sum of its proper divisors (2427826219) is less than itself. Its deficiency is 4381979602

Bases of 6809805821

• Binary: 110010101111001010110001111111101₂
• Hexadecimal: 0x195E563FD
• Base-36: 34MDRST

Squares and roots of 6809805821

• 6809805821 squared (6809805821²) is 46373455319725484041
• 6809805821 cubed (6809805821³) is 315794225976150017344444402661
• The square root of 6809805821 is 82521.5476163651
• The cube root of 6809805821 is 1895.4466980441

Scales and comparisons

• 6,809,805,821 seconds is equal to 216 years, 27 weeks, 4 days, 4 hours, 43 minutes, 41 seconds.
• To count from 1 to 6,809,805,821 would take you about four hundred thirty-three 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 6809805821 cubic inches would be around 158 feet tall.

Recreational maths with 6809805821

• 6809805821 backwards is 1285089086
• The number of decimal digits it has is: 10
• The sum of 6809805821's digits is 47
• More coming soon!