181918319545375168

Names of 181918319545375168

• Cardinal: 181918319545375168 can be written as One hundred eighty-one quadrillion, nine hundred eighteen trillion, three hundred nineteen billion, five hundred forty-five million, three hundred seventy-five thousand, one hundred sixty-eight.

Scientific notation

• Scientific notation: 1.81918319545375168 × 10¹⁷

Factors of 181918319545375168

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 15
• Sum of prime factors: 76

Divisors of 181918319545375168

• Number of divisors d(n): 126
• Complete list of divisors:
  1 2 4 7 8 14 16 28 32 56 64 67 112 134 224 268 448 469 536 938 1072 1876 2144 3752 4288 4489 7504 8978 15008 17956 30016 31423 35912 62846 71824 125692 143648 251384 287296 300763 502768 601526 1005536 1203052 2011072 2105341 2406104 4210682 4812208 8421364 9624416 16842728 19248832 20151121 33685456 40302242 67370912 80604484 134741824 141057847 161208968 282115694 322417936 564231388 644835872 1128462776 1289671744 1350125107 2256925552 2700250214 4513851104 5400500428 9027702208 9450875749 10801000856 18901751498 21602001712 37803502996 43204003424 75607005992 86408006848 90458382169 151214011984 180916764338 302428023968 361833528676 604856047936 633208675183 723667057352 1266417350366 1447334114704 2532834700732 2894668229408 5065669401464 5789336458816 6060711605323 10131338802928 12121423210646 20262677605856 24242846421292 40525355211712 42424981237261 48485692842584 84849962474522 96971385685168 169699924949044 193942771370336 339399849898088 387885542740672 406067677556641 678799699796176 812135355113282 1357599399592352 1624270710226564 2715198799184704 2842473742896487 3248541420453128 5684947485792974 6497082840906256 11369894971585948 12994165681812512 22739789943171896 25988331363625024 45479579886343792 90959159772687584 181918319545375168
• Sum of all divisors σ(n): 418815741615691896
• Sum of proper divisors (its aliquot sum) s(n): 236897422070316728
• 181918319545375168 is an abundant number, because the sum of its proper divisors (236897422070316728) is greater than itself. Its abundance is 54979102524941560

Bases of 181918319545375168

• Binary: 1010000110010011011011111101101110101000110101100111000000₂
• Hexadecimal: 0x2864DBF6EA359C0
• Base-36: 1DR8NU9THVB4

Squares and roots of 181918319545375168

• 181918319545375168 squared (181918319545375168²) is 33094274986213228871239257871028224
• 181918319545375168 cubed (181918319545375168³) is 6020454892064454552262350618179533941242795996741632
• The square root of 181918319545375168 is 426518838.4413696305
• The cube root of 181918319545375168 is 566620.3202281803

Scales and comparisons

• 181,918,319,545,375,168 seconds is equal to 5,784,439,851 years, 12 weeks, 1 day, 5 hours, 59 minutes, 28 seconds.
• To count from 1 to 181,918,319,545,375,168 would take you about seventeen billion, three hundred fifty-three million, three hundred nineteen thousand, five hundred fifty-three 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 181918319545375168 cubic inches would be around 47218.4 feet tall.

Recreational maths with 181918319545375168

• 181918319545375168 backwards is 861573545913819181
• The number of decimal digits it has is: 18
• The sum of 181918319545375168's digits is 85
• More coming soon!