1640406816

Names of 1640406816

• Cardinal: 1640406816 can be written as One billion, six hundred forty million, four hundred six thousand, eight hundred sixteen.

Scientific notation

• Scientific notation: 1.640406816 × 10⁹

Factors of 1640406816

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 11999

Divisors of 1640406816

• Number of divisors d(n): 120
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 53 54 72 81 96 106 108 144 159 162 212 216 288 318 324 424 432 477 636 648 848 864 954 1272 1296 1431 1696 1908 2544 2592 2862 3816 4293 5088 5724 7632 8586 11448 11941 15264 17172 22896 23882 34344 35823 45792 47764 68688 71646 95528 107469 137376 143292 191056 214938 286584 322407 382112 429876 573168 632873 644814 859752 967221 1146336 1265746 1289628 1719504 1898619 1934442 2531492 2579256 3439008 3797238 3868884 5062984 5158512 5695857 7594476 7737768 10125968 10317024 11391714 15188952 15475536 17087571 20251936 22783428 30377904 30951072 34175142 45566856 51262713 60755808 68350284 91133712 102525426 136700568 182267424 205050852 273401136 410101704 546802272 820203408 1640406816
• Sum of all divisors σ(n): 4915828764
• Sum of proper divisors (its aliquot sum) s(n): 3275421948
• 1640406816 is an abundant number, because the sum of its proper divisors (3275421948) is greater than itself. Its abundance is 1635015132

Bases of 1640406816

• Binary: 1100001110001101001111100100000₂
• Hexadecimal: 0x61C69F20
• Base-36: R4NM00

Squares and roots of 1640406816

• 1640406816 squared (1640406816²) is 2690934521979257856
• 1640406816 cubed (1640406816³) is 4414227331264476397603946496
• The square root of 1640406816 is 40501.9359537295
• The cube root of 1640406816 is 1179.3712095695

Scales and comparisons

• 1,640,406,816 seconds is equal to 52 years, 8 weeks, 2 days, 4 hours, 33 minutes, 36 seconds.
• To count from 1 to 1,640,406,816 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 1640406816 cubic inches would be around 98.3 feet tall.

Recreational maths with 1640406816

• 1640406816 backwards is 6186040461
• 1640406816 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1640406816's digits is 36
• More coming soon!