164543921991

Names of 164543921991

• Cardinal: 164543921991 can be written as One hundred sixty-four billion, five hundred forty-three million, nine hundred twenty-one thousand, nine hundred ninety-one.

Scientific notation

• Scientific notation: 1.64543921991 × 10¹¹

Factors of 164543921991

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 2287

Divisors of 164543921991

• Number of divisors d(n): 64
• Complete list of divisors:
  1 3 9 27 43 127 129 381 387 1021 1093 1143 1161 3063 3279 3429 5461 9189 9837 16383 27567 29511 43903 46999 49149 129667 131709 138811 140997 147447 389001 395127 416433 422991 1115953 1167003 1185381 1249299 1268973 3347859 3501009 3747897 5575681 5968873 10043577 16727043 17906619 30130731 47985979 50181129 53719857 141726031 143957937 150543387 161159571 425178093 431873811 1275534279 1295621433 3826602837 6094219333 18282657999 54847973997 164543921991
• Sum of all divisors σ(n): 251878359040
• Sum of proper divisors (its aliquot sum) s(n): 87334437049
• 164543921991 is a deficient number, because the sum of its proper divisors (87334437049) is less than itself. Its deficiency is 77209484942

Bases of 164543921991

• Binary: 10011001001111100101001111111101000111₂
• Hexadecimal: 0x264F94FF47
• Base-36: 23L97ARR

Squares and roots of 164543921991

• 164543921991 squared (164543921991²) is 27074702264180293404081
• 164543921991 cubed (164543921991³) is 4454977697286833271440595905045271
• The square root of 164543921991 is 405640.1385353771
• The cube root of 164543921991 is 5479.7483544445

Scales and comparisons

• 164,543,921,991 seconds is equal to 5,231 years, 51 weeks, 2 days, 12 hours, 59 minutes, 51 seconds.
• To count from 1 to 164,543,921,991 would take you about ten thousand, four hundred sixty-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 164543921991 cubic inches would be around 456.6 feet tall.

Recreational maths with 164543921991

• 164543921991 backwards is 199129345461
• The number of decimal digits it has is: 12
• The sum of 164543921991's digits is 54
• More coming soon!