1640723540

Names of 1640723540

• Cardinal: 1640723540 can be written as One billion, six hundred forty million, seven hundred twenty-three thousand, five hundred forty.

Scientific notation

• Scientific notation: 1.64072354 × 10⁹

Factors of 1640723540

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 82036184

Divisors of 1640723540

• Number of divisors d(n): 12
• Complete list of divisors:
  1 2 4 5 10 20 82036177 164072354 328144708 410180885 820361770 1640723540
• Sum of all divisors σ(n): 3445519476
• Sum of proper divisors (its aliquot sum) s(n): 1804795936
• 1640723540 is an abundant number, because the sum of its proper divisors (1804795936) is greater than itself. Its abundance is 164072396

Bases of 1640723540

• Binary: 1100001110010110111010001010100₂
• Hexadecimal: 0x61CB7454
• Base-36: R4UEDW

Squares and roots of 1640723540

• 1640723540 squared (1640723540²) is 2691973734710131600
• 1640723540 cubed (1640723540³) is 4416784675600627992617864000
• The square root of 1640723540 is 40505.8457509531
• The cube root of 1640723540 is 1179.4471076383

Scales and comparisons

• 1,640,723,540 seconds is equal to 52 years, 8 weeks, 5 days, 20 hours, 32 minutes, 20 seconds.
• To count from 1 to 1,640,723,540 would take you about one hundred four 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 1640723540 cubic inches would be around 98.3 feet tall.

Recreational maths with 1640723540

• 1640723540 backwards is 0453270461
• The number of decimal digits it has is: 10
• The sum of 1640723540's digits is 32
• More coming soon!