1640168145

Names of 1640168145

• Cardinal: 1640168145 can be written as One billion, six hundred forty million, one hundred sixty-eight thousand, one hundred forty-five.

Scientific notation

• Scientific notation: 1.640168145 × 10⁹

Factors of 1640168145

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 6
• Sum of prime factors: 473379

Divisors of 1640168145

• Number of divisors d(n): 48
• Complete list of divisors:
  1 3 5 7 9 11 15 21 33 35 45 55 63 77 99 105 165 231 315 385 495 693 1155 3465 473353 1420059 2366765 3313471 4260177 5206883 7100295 9940413 15620649 16567355 21300885 26034415 29821239 36448181 46861947 49702065 78103245 109344543 149106195 182240905 234309735 328033629 546722715 1640168145
• Sum of all divisors σ(n): 3544474752
• Sum of proper divisors (its aliquot sum) s(n): 1904306607
• 1640168145 is an abundant number, because the sum of its proper divisors (1904306607) is greater than itself. Its abundance is 264138462

Bases of 1640168145

• Binary: 1100001110000101111101011010001₂
• Hexadecimal: 0x61C2FAD1
• Base-36: R4IHU9

Squares and roots of 1640168145

• 1640168145 squared (1640168145²) is 2690151543872741025
• 1640168145 cubed (1640168145³) is 4412300867482639763039648625
• The square root of 1640168145 is 40498.9894318365
• The cube root of 1640168145 is 1179.3140092545

Scales and comparisons

• 1,640,168,145 seconds is equal to 52 years, 7 weeks, 6 days, 10 hours, 15 minutes, 45 seconds.
• To count from 1 to 1,640,168,145 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 1640168145 cubic inches would be around 98.3 feet tall.

Recreational maths with 1640168145

• 1640168145 backwards is 5418610461
• The number of decimal digits it has is: 10
• The sum of 1640168145's digits is 36
• More coming soon!