1681421625

Names of 1681421625

• Cardinal: 1681421625 can be written as One billion, six hundred eighty-one million, four hundred twenty-one thousand, six hundred twenty-five.

Scientific notation

• Scientific notation: 1.681421625 × 10⁹

Factors of 1681421625

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 2057

Divisors of 1681421625

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 5 9 13 15 19 25 27 39 45 57 65 75 95 117 125 135 171 195 225 247 285 325 351 375 475 513 585 675 741 855 975 1125 1235 1425 1625 1755 2017 2223 2375 2565 2925 3375 3705 4275 4875 6051 6175 6669 7125 8775 10085 11115 12825 14625 18153 18525 21375 26221 30255 30875 33345 38323 43875 50425 54459 55575 64125 78663 90765 92625 114969 131105 151275 166725 191615 235989 252125 272295 277875 344907 393315 453825 498199 574845 655525 707967 756375 833625 958075 1034721 1179945 1361475 1494597 1724535 1966575 2269125 2490995 2874225 3277625 3539835 4483791 4790375 5173605 5899725 6807375 7472985 8622675 9832875 12454975 13451373 14371125 17699175 22418955 25868025 29498625 37364925 43113375 62274875 67256865 88495875 112094775 129340125 186824625 336284325 560473875 1681421625
• Sum of all divisors σ(n): 3525849600
• Sum of proper divisors (its aliquot sum) s(n): 1844427975
• 1681421625 is an abundant number, because the sum of its proper divisors (1844427975) is greater than itself. Its abundance is 163006350

Bases of 1681421625

• Binary: 1100100001110000111010100111001₂
• Hexadecimal: 0x64387539
• Base-36: RT2P89

Squares and roots of 1681421625

• 1681421625 squared (1681421625²) is 2827178681017640625
• 1681421625 cubed (1681421625³) is 4753679372002037953353515625
• The square root of 1681421625 is 41005.1414459211
• The cube root of 1681421625 is 1189.1196145875

Scales and comparisons

• 1,681,421,625 seconds is equal to 53 years, 24 weeks, 21 hours, 33 minutes, 45 seconds.
• To count from 1 to 1,681,421,625 would take you about one hundred six 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 1681421625 cubic inches would be around 99.1 feet tall.

Recreational maths with 1681421625

• 1681421625 backwards is 5261241861
• The number of decimal digits it has is: 10
• The sum of 1681421625's digits is 36
• More coming soon!