18381934833753025161

Names of 18381934833753025161

• Cardinal: 18381934833753025161 can be written as Eighteen quintillion, three hundred eighty-one quadrillion, nine hundred thirty-four trillion, eight hundred thirty-three billion, seven hundred fifty-three million, twenty-five thousand, one hundred sixty-one.

Scientific notation

• Scientific notation: 1.8381934833753025161 × 10¹⁹

Factors of 18381934833753025161

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 16
• Sum of prime factors: 85

Divisors of 18381934833753025161

• Number of divisors d(n): 245
• Complete list of divisors:
  1 3 9 11 27 33 71 81 99 121 213 297 363 639 781 891 1089 1331 1917 2343 3267 3993 5041 5751 7029 8591 9801 11979 14641 15123 21087 25773 35937 43923 45369 55451 63261 77319 94501 107811 131769 136107 161051 166353 231957 283503 357911 395307 408321 483153 499059 609961 695871 850509 1039511 1073733 1185921 1449459 1497177 1771561 1829883 2551527 3118533 3221199 3937021 4348377 4491531 5314683 5489649 6709571 7654581 9355599 9663597 11434621 11811063 13045131 15944049 16468947 20128713 25411681 28066797 28990791 34303863 35433189 43307231 47832147 49406841 60386139 73805281 76235043 84200391 102911589 106299567 125780831 129921693 143496441 181158417 221415843 228705129 279528491 308734767 318898701 377342493 389765079 476379541 543475251 664247529 686115387 811858091 838585473 926204301 1132027479 1169295237 1429138623 1804229351 1992742587 2058346161 2435574273 2515756419 3074813401 3396082437 3507885711 4287415869 5240174951 5412688053 5978227761 7306722819 7547269257 8930439001 9224440203 10188247311 12862247607 15720524853 16238064159 19846522861 21920168457 22641807771 26791317003 27673320609 33822947411 38586742821 47161574559 48714192477 57641924461 59539568583 65760505371 80373951009 83019961827 101468842233 128100283921 141484723677 146142577431 172925773383 178618705749 218311751471 241121853027 249059885481 304406526699 372052421521 384300851763 424454171031 518777320149 535856117247 634061169071 654935254413 723365559081 913219580097 1116157264563 1152902555289 1409103123131 1556331960447 1607568351741 1902183507213 1964805763239 2401429266181 2739658740291 3348471793689 3458707665867 4092576636731 4227309369393 4668995881341 5706550521639 5894417289717 7204287798543 10045415381067 10376122997601 12277729910193 12681928108179 15500134354441 17119651564917 17683251869151 21612863395629 26415721927991 30136246143201 36833189730579 38045784324537 45018343004041 46500403063323 51358954694751 64838590186887 79247165783973 110499569191737 114137352973611 135055029012123 139501209189969 170501477898851 194515770560661 237741497351919 290572941207901 331498707575211 405165087036369 418503627569907 511504433696553 713224492055757 871718823623703 1215495261109107 1255510882709721 1534513301089659 1875516256887361 2139673476167271 2615156470871109 3196302353286911 3646485783327321 4603539903268977 5626548770662083 7845469412613327 9588907059860733 13810619709806931 16879646311986249 20630678825760971 23536408237839981 28766721179582199 50638938935958747 61892036477282913 86300163538746597 151916816807876241 185676109431848739 226937467083370681 258900490616239791 557028328295546217 680812401250112043 1671084984886638651 2042437203750336129 6127311611251008387 18381934833753025161
• Sum of all divisors σ(n): 30636880680476736589
• Sum of proper divisors (its aliquot sum) s(n): 12254945846723711428
• 18381934833753025161 is a deficient number, because the sum of its proper divisors (12254945846723711428) is less than itself. Its deficiency is 6126988987029313733

Bases of 18381934833753025161

• Binary: 1111111100011001110000000101011011110010001110100110101010001001₂
• Hexadecimal: 0xFF19C056F23A6A89
• Base-36: 3VNNW2KCRNVK9

Squares and roots of 18381934833753025161

• 18381934833753025161 squared (18381934833753025161²) is 337895528232342856763789713119099075921
• 18381934833753025161 cubed (18381934833753025161³) is 6211173580583481910493375805792797068941994850013362248281
• 18381934833753025161 is a perfect square number. Its square root is 4287415869
• The cube root of 18381934833753025161 is 2639147.9704628315
• Being both a perfect square and a perfect cube, 18381934833753025161 is also a perfect sixth number.

Scales and comparisons

• 18,381,934,833,753,025,161 seconds is equal to 293,274,701,009 years, 3 weeks, 3 days, 15 hours, 30 minutes, 7 seconds.
• To count from 1 to 18,381,934,833,753,025,161 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 18381934833753025161 cubic inches would be around 219929 feet tall.

Recreational maths with 18381934833753025161

• 18381934833753025161 backwards is 16152035733843918381
• 18381934833753025161 is a Harshad number.
• The number of decimal digits it has is: 20
• The sum of 18381934833753025161's digits is 81
• More coming soon!