18397981336644

Names of 18397981336644

• Cardinal: 18397981336644 can be written as Eighteen trillion, three hundred ninety-seven billion, nine hundred eighty-one million, three hundred thirty-six thousand, six hundred forty-four.

Scientific notation

• Scientific notation: 1.8397981336644 × 10¹³

Factors of 18397981336644

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2625600

Divisors of 18397981336644

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 9 12 13 14 18 21 23 26 27 28 31 36 39 42 46 52 54 62 63 69 78 84 91 92 93 108 117 124 126 138 156 161 182 186 189 207 217 234 252 273 276 279 299 322 351 364 372 378 403 414 434 468 483 546 558 598 621 644 651 702 713 756 806 819 828 837 868 897 966 1092 1116 1196 1209 1242 1302 1404 1426 1449 1612 1638 1674 1794 1932 1953 2093 2139 2418 2457 2484 2604 2691 2821 2852 2898 3276 3348 3588 3627 3906 4186 4278 4347 4836 4914 4991 5382 5642 5796 5859 6279 6417 7254 7812 8073 8372 8463 8556 8694 9269 9828 9982 10764 10881 11284 11718 12558 12834 14508 14973 16146 16926 17388 18538 18837 19251 19964 21762 23436 25116 25389 25668 27807 29946 32292 33852 37076 37674 38502 43524 44919 50778 55614 56511 59892 64883 75348 76167 77004 83421 89838 101556 111228 113022 129766 134757 152334 166842 179676 194649 226044 250263 259532 269514 304668 333684 389298 500526 539028 583947 778596 1001052 1167894 1751841 2335788 2625521 3503682 5251042 7007364 7876563 10502084 15753126 18378647 23629689 31506252 34131773 36757294 47259378 55135941 60386983 68263546 70889067 73514588 81391151 94518756 102395319 110271882 120773966 136527092 141778134 162782302 165407823 181160949 204790638 220543764 238922411 241547932 244173453 283556268 307185957 325564604 330815646 362321898 409581276 422708881 477844822 488346906 496223469 543482847 569738057 614371914 661631292 716767233 724643796 732520359 785030779 845417762 921557871 955689644 976693812 992446938 1058084963 1086965694 1139476114 1228743828 1268126643 1433534466 1465040718 1570061558 1630448541 1690835524 1709214171 1843115742 1871996473 1984893876 2116169926 2150301699 2173931388 2197561077 2278952228 2355092337 2536253286 2867068932 2930081436 3140123116 3174254889 3260897082 3418428342 3686231484 3743992946 3804379929 4232339852 4300603398 4395122154 4710184674 5072506572 5127642513 5495215453 5615989419 6348509778 6450905097 6521794164 6836856684 7065277011 7406594741 7487985892 7608759858 8601206796 8790244308 9420369348 9522764667 10255285026 10990430906 11231978838 11413139787 12697019556 12901810194 13103975311 14130554022 14813189482 15217519716 15382927539 16485646359 16847968257 19045529334 20510570052 21195831033 21980861812 22219784223 22463957676 22826279574 24335954149 25803620388 26207950622 28261108044 28568294001 29626378964 30765855078 32971292718 33695936514 38091058668 39311925933 42391662066 44439568446 45652559148 48671908298 49456939077 50543904771 52415901244 57136588002 61531710156 65942585436 66659352669 67391873028 73007862447 78623851866 84783324132 88879136892 97343816596 98913878154 101087809542 114273176004 117935777799 133318705338 146015724894 148370817231 157247703732 170351679043 197827756308 199978058007 202175619084 219023587341 235871555598 266637410676 292031449788 296741634462 340703358086 353807333397 399956116014 438047174682 471743111196 511055037129 593483268924 657070762023 681406716172 707614666794 799912232028 876094349364 1022110074258 1314141524046 1415229333588 1533165111387 2044220148516 2628283048092 3066330222774 4599495334161 6132660445548 9198990668322 18397981336644
• Sum of all divisors σ(n): 63234332098560
• Sum of proper divisors (its aliquot sum) s(n): 44836350761916
• 18397981336644 is an abundant number, because the sum of its proper divisors (44836350761916) is greater than itself. Its abundance is 26438369425272

Bases of 18397981336644

• Binary: 100001011101110011101001001000110010001000100₂
• Hexadecimal: 0x10BB9D246444
• Base-36: 6IRWZ2DL0

Squares and roots of 18397981336644

• 18397981336644 squared (18397981336644²) is 338485717263500944857182736
• 18397981336644 cubed (18397981336644³) is 6227453908934448179418507770957440977984
• The square root of 18397981336644 is 4289286.8097906439
• The cube root of 18397981336644 is 26399.1569484401

Scales and comparisons

• 18,397,981,336,644 seconds is equal to 584,998 years, 46 weeks, 4 days, 19 hours, 17 minutes, 24 seconds.
• To count from 1 to 18,397,981,336,644 would take you about one million, four hundred sixty-two thousand, four hundred ninety-seven 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 18397981336644 cubic inches would be around 2199.9 feet tall.

Recreational maths with 18397981336644

• 18397981336644 backwards is 44663318979381
• The number of decimal digits it has is: 14
• The sum of 18397981336644's digits is 72
• More coming soon!