18309694683869491728

Names of 18309694683869491728

• Cardinal: 18309694683869491728 can be written as Eighteen quintillion, three hundred nine quadrillion, six hundred ninety-four trillion, six hundred eighty-three billion, eight hundred sixty-nine million, four hundred ninety-one thousand, seven hundred twenty-eight.

Scientific notation

• Scientific notation: 1.8309694683869491728 × 10¹⁹

Factors of 18309694683869491728

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 7
• Sum of prime factors: 54493138940087785

Divisors of 18309694683869491728

• Number of divisors d(n): 40
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 16 21 24 28 42 48 56 84 112 168 336 54493138940087773 108986277880175546 163479416820263319 217972555760351092 326958833640526638 381451972580614411 435945111520702184 653917667281053276 762903945161228822 871890223041404368 1144355917741843233 1307835334562106552 1525807890322457644 2288711835483686466 2615670669124213104 3051615780644915288 4577423670967372932 6103231561289830576 9154847341934745864 18309694683869491728
• Sum of all divisors σ(n): 54057193828567071808
• Sum of proper divisors (its aliquot sum) s(n): 35747499144697580080
• 18309694683869491728 is an abundant number, because the sum of its proper divisors (35747499144697580080) is greater than itself. Its abundance is 17437804460828088352

Bases of 18309694683869491728

• Binary: 1111111000011001000110100100111001011001111001100011001000010000₂
• Hexadecimal: 0xFE191A4E59E63210
• Base-36: 3V3WL2PN8EK9C

Squares and roots of 18309694683869491728

• 18309694683869491728 squared (18309694683869491728²) is 335244919416518726627904180313060425984
• 18309694683869491728 cubed (18309694683869491728³) is 6138232118834889075595557309071571775855786333829244260352
• The square root of 18309694683869491728 is 4278982902.9653170289
• The cube root of 18309694683869491728 is 2635686.1886437867

Scales and comparisons

• 18,309,694,683,869,491,728 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,309,694,683,869,491,728 would take you about two hundred ninety-three billion, two hundred seventy-four million, seven hundred one thousand and nine 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 18309694683869491728 cubic inches would be around 219640.5 feet tall.

Recreational maths with 18309694683869491728

• 18309694683869491728 backwards is 82719496838649690381
• The number of decimal digits it has is: 20
• The sum of 18309694683869491728's digits is 111
• More coming soon!