9918991008

Names of 9918991008

• Cardinal: 9918991008 can be written as Nine billion, nine hundred eighteen million, nine hundred ninety-one thousand and eight.

Scientific notation

• Scientific notation: 9.918991008 × 10⁹

Factors of 9918991008

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 87155

Divisors of 9918991008

• Number of divisors d(n): 72
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 397 794 1191 1588 2382 3176 3573 4764 6352 7146 9528 12704 14292 19056 28584 38112 57168 86753 114336 173506 260259 347012 520518 694024 780777 1041036 1388048 1561554 2082072 2776096 3123108 4164144 6246216 8328288 12492432 24984864 34440941 68881882 103322823 137763764 206645646 275527528 309968469 413291292 551055056 619936938 826582584 1102110112 1239873876 1653165168 2479747752 3306330336 4959495504 9918991008
• Sum of all divisors σ(n): 28278507348
• Sum of proper divisors (its aliquot sum) s(n): 18359516340
• 9918991008 is an abundant number, because the sum of its proper divisors (18359516340) is greater than itself. Its abundance is 8440525332

Bases of 9918991008

• Binary: 1001001111001101111100101010100000₂
• Hexadecimal: 0x24F37CAA0
• Base-36: 4K1IEG0

Squares and roots of 9918991008

• 9918991008 squared (9918991008²) is 98386382616784856064
• 9918991008 cubed (9918991008³) is 975893644485536497169390272512
• The square root of 9918991008 is 99594.1313933707
• The cube root of 9918991008 is 2148.6012902127

Scales and comparisons

• 9,918,991,008 seconds is equal to 315 years, 20 weeks, 3 days, 3 hours, 16 minutes, 48 seconds.
• To count from 1 to 9,918,991,008 would take you about six hundred thirty 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 9918991008 cubic inches would be around 179.1 feet tall.

Recreational maths with 9918991008

• 9918991008 backwards is 8001998199
• The number of decimal digits it has is: 10
• The sum of 9918991008's digits is 54
• More coming soon!