18978980864

Names of 18978980864

• Cardinal: 18978980864 can be written as Eighteen billion, nine hundred seventy-eight million, nine hundred eighty thousand, eight hundred sixty-four.

Scientific notation

• Scientific notation: 1.8978980864 × 10¹⁰

Factors of 18978980864

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 330

Divisors of 18978980864

• Number of divisors d(n): 176
• Complete list of divisors:
  1 2 4 8 16 29 32 43 58 64 86 89 116 128 167 172 178 232 256 334 344 356 464 512 668 688 712 928 1024 1247 1336 1376 1424 1856 2494 2581 2672 2752 2848 3712 3827 4843 4988 5162 5344 5504 5696 7181 7424 7654 9686 9976 10324 10688 11008 11392 14362 14848 14863 15308 19372 19952 20648 21376 22016 22784 28724 29696 29726 30616 38744 39904 41296 42752 44032 45568 57448 59452 61232 77488 79808 82592 85504 91136 110983 114896 118904 122464 154976 159616 165184 171008 208249 221966 229792 237808 244928 309952 319232 330368 416498 431027 443932 459584 475616 489856 619904 638464 639109 660736 832996 862054 887864 919168 951232 979712 1239808 1276928 1278218 1321472 1665992 1724108 1775728 1838336 1902464 1959424 2479616 2556436 2642944 3331984 3448216 3551456 3676672 3804928 3918848 4959232 5112872 6663968 6896432 7102912 7353344 7609856 10225744 13327936 13792864 14205824 15219712 18534161 20451488 26655872 27585728 28411648 37068322 40902976 53311744 55171456 56823296 74136644 81805952 106623488 110342912 113646592 148273288 163611904 213246976 220685824 296546576 327223808 441371648 593093152 654447616 1186186304 2372372608 4744745216 9489490432 18978980864
• Sum of all divisors σ(n): 40854844800
• Sum of proper divisors (its aliquot sum) s(n): 21875863936
• 18978980864 is an abundant number, because the sum of its proper divisors (21875863936) is greater than itself. Its abundance is 2896883072

Bases of 18978980864

• Binary: 10001101011001111000100010000000000₂
• Hexadecimal: 0x46B3C4400
• Base-36: 8PVLFCW

Squares and roots of 18978980864

• 18978980864 squared (18978980864²) is 360201714636078186496
• 18978980864 cubed (18978980864³) is 6836261449258116625515407212544
• The square root of 18978980864 is 137764.2220026667
• The cube root of 18978980864 is 2667.4172944671

Scales and comparisons

• 18,978,980,864 seconds is equal to 603 years, 24 weeks, 4 days, 3 hours, 7 minutes, 44 seconds.
• To count from 1 to 18,978,980,864 would take you about one thousand, two hundred six 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 18978980864 cubic inches would be around 222.3 feet tall.

Recreational maths with 18978980864

• 18978980864 backwards is 46808987981
• The number of decimal digits it has is: 11
• The sum of 18978980864's digits is 68
• More coming soon!