18138394941213174849

Names of 18138394941213174849

• Cardinal: 18138394941213174849 can be written as Eighteen quintillion, one hundred thirty-eight quadrillion, three hundred ninety-four trillion, nine hundred forty-one billion, two hundred thirteen million, one hundred seventy-four thousand, eight hundred forty-nine.

Scientific notation

• Scientific notation: 1.8138394941213174849 × 10¹⁹

Factors of 18138394941213174849

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 758

Divisors of 18138394941213174849

• Number of divisors d(n): 225
• Complete list of divisors:
  1 3 9 13 27 39 81 117 169 281 351 461 507 843 1053 1383 1521 2529 3653 4149 4563 5993 7587 10959 12447 13689 17979 22761 32877 37341 47489 53937 77909 78961 98631 129541 142467 161811 212521 233727 236883 295893 388623 427401 485433 637563 701181 710649 1026493 1165869 1282203 1684033 1912689 2103543 2131947 2762773 3079479 3497607 3846609 5052099 5738067 6310629 6395841 8288319 9238437 10492821 13344409 15156297 17214201 21892429 22188041 24864957 27715311 35916049 36401021 40033227 45468891 59718401 65677287 66564123 74594871 83145933 107748147 109203063 120099681 136406673 179155203 197031861 199692369 223784613 288444533 323244441 327609189 360299043 473213273 537465609 591095583 599077107 776339213 865333599 969733323 982827567 1080897129 1419639819 1612396827 1773286749 1797231321 2329017639 2596000797 2909199969 2948482701 3749778929 4258919457 4837190481 6151772549 6234839521 6987052917 7788002391 10092409769 10228686901 11249336787 12776758371 16780870681 18455317647 18704518563 20961158751 23364007173 30277229307 30686060703 33748010361 38330275113 50342612043 55365952941 56113555689 62883476253 81052913773 90831687921 92058182109 101244031083 132972929713 151027836129 166097858823 168340667067 218151318853 243158741319 272495063763 276174546327 303732093249 398918789139 453083508387 498293576469 505022001201 654453956559 729476223957 817485191289 828523638981 1053687879049 1196756367417 1359250525161 1728648086269 1963361869677 2188428671871 2835967145089 2874261019181 3161063637147 3590269102251 4715424661361 5185944258807 5890085609031 6565286015613 8507901435267 8622783057543 9483190911441 10770807306753 14146273984083 15557832776421 17670256827093 25523704305801 25868349172629 28449572734323 37365393249353 42438821952249 46673498329263 61300520597693 76571112917403 77605047517887 85348718202969 112096179748059 127316465856747 140020494987789 183901561793079 229713338752209 232815142553661 336288539244177 381949397570241 485750112241589 551704685379237 796906767770009 1008865617732531 1325034329842441 1457250336724767 1655114056137711 2390720303310027 3026596853197593 3975102989527323 4371751010174301 4965342168413133 7172160909930081 11925308968581969 13115253030522903 17225446287951733 21516482729790243 35775926905745907 39345759091568709 51676338863855199 64549448189370729 107327780717237721 155029016591565597 223930801743372529 465087049774696791 671792405230117587 1395261149324090373 2015377215690352761 6046131647071058283 18138394941213174849
• Sum of all divisors σ(n): 29509032335431782045
• Sum of proper divisors (its aliquot sum) s(n): 11370637394218607196
• 18138394941213174849 is a deficient number, because the sum of its proper divisors (11370637394218607196) is less than itself. Its deficiency is 6767757546994567653

Bases of 18138394941213174849

• Binary: 1111101110111000100001100001100100000010110000001110110001000001₂
• Hexadecimal: 0xFBB8861902C0EC41
• Base-36: 3TT1WDU934F29

Squares and roots of 18138394941213174849

• 18138394941213174849 squared (18138394941213174849²) is 329001371043427692686345521334246172801
• 18138394941213174849 cubed (18138394941213174849³) is 5967556804186307569914287974777928461654524406156681082049
• 18138394941213174849 is a perfect square number. Its square root is 4258919457
• The cube root of 18138394941213174849 is 2627440.8711636477

Scales and comparisons

• 18,138,394,941,213,174,849 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,138,394,941,213,174,849 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 18138394941213174849 cubic inches would be around 218953.4 feet tall.

Recreational maths with 18138394941213174849

• 18138394941213174849 backwards is 94847131214949383181
• The number of decimal digits it has is: 20
• The sum of 18138394941213174849's digits is 90
• More coming soon!