1664945820

Names of 1664945820

• Cardinal: 1664945820 can be written as One billion, six hundred sixty-four million, nine hundred forty-five thousand, eight hundred twenty.

Scientific notation

• Scientific notation: 1.66494582 × 10⁹

Factors of 1664945820

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 3083243

Divisors of 1664945820

• Number of divisors d(n): 48
• Complete list of divisors:
  1 2 3 4 5 6 9 10 12 15 18 20 27 30 36 45 54 60 90 108 135 180 270 540 3083233 6166466 9249699 12332932 15416165 18499398 27749097 30832330 36998796 46248495 55498194 61664660 83247291 92496990 110996388 138745485 166494582 184993980 277490970 332989164 416236455 554981940 832472910 1664945820
• Sum of all divisors σ(n): 5179833120
• Sum of proper divisors (its aliquot sum) s(n): 3514887300
• 1664945820 is an abundant number, because the sum of its proper divisors (3514887300) is greater than itself. Its abundance is 1849941480

Bases of 1664945820

• Binary: 1100011001111010000111010011100₂
• Hexadecimal: 0x633D0E9C
• Base-36: RJ9KF0

Squares and roots of 1664945820

• 1664945820 squared (1664945820²) is 2772044583535472400
• 1664945820 cubed (1664945820³) is 4615304042211025594105368000
• The square root of 1664945820 is 40803.7476220015
• The cube root of 1664945820 is 1185.2229031093

Scales and comparisons

• 1,664,945,820 seconds is equal to 52 years, 48 weeks, 6 days, 4 hours, 57 minutes.
• To count from 1 to 1,664,945,820 would take you about one hundred five 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 1664945820 cubic inches would be around 98.8 feet tall.

Recreational maths with 1664945820

• 1664945820 backwards is 0285494661
• 1664945820 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1664945820's digits is 45
• More coming soon!