18391949083988368

Names of 18391949083988368

• Cardinal: 18391949083988368 can be written as Eighteen quadrillion, three hundred ninety-one trillion, nine hundred forty-nine billion, eighty-three million, nine hundred eighty-eight thousand, three hundred sixty-eight.

Scientific notation

• Scientific notation: 1.8391949083988368 × 10¹⁶

Factors of 18391949083988368

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 1526

Divisors of 18391949083988368

• Number of divisors d(n): 270
• Complete list of divisors:
  1 2 4 7 8 14 16 28 49 56 97 98 112 194 196 388 392 599 679 776 784 821 1198 1358 1552 1642 2396 2716 3284 4193 4753 4792 5432 5747 6568 8386 9506 9584 10864 11494 13136 16772 19012 22988 29351 33544 38024 40229 45976 58103 58702 67088 76048 79637 80458 91952 116206 117404 159274 160916 232412 234808 318548 321832 358801 406721 464824 469616 491779 557459 637096 643664 674041 717602 813442 929648 983558 1114918 1274192 1348082 1435204 1626884 1967116 2229836 2511607 2696164 2847047 2870408 3253768 3442453 3902213 3934232 4459672 4718287 5023214 5392328 5694094 5740816 6507536 6884906 7804426 7868464 8919344 9436574 10046428 10784656 11388188 13769812 15608852 17581249 18873148 20092856 22776376 24097171 27539624 31217704 33028009 34803697 35162498 37746296 40185712 45552752 47702563 48194342 55079248 62435408 65381977 66056018 69607394 70324996 75492592 95405126 96388684 130763954 132112036 139214788 140649992 190810252 192777368 243625879 261527908 264224072 278429576 281299984 294575621 333917941 381620504 385554736 403750559 457673839 487251758 523055816 528448144 556859152 589151242 667835882 763241008 807501118 915347678 974503516 1046111632 1178302484 1335671764 1615002236 1705381153 1830695356 1949007032 2062029347 2337425587 2356604968 2671343528 2826253913 3203716873 3230004472 3410762306 3661390712 3898014064 4124058694 4674851174 4713209936 5342687056 5652507826 6407433746 6460008944 6821524612 7322781424 8248117388 9349702348 11305015652 12814867492 13643049224 14434205429 16496234776 18699404696 19783777391 22610031304 25629734984 27286098448 28573835237 28868410858 32992469552 37398809392 39163804223 39567554782 45220062608 51259469968 57147670474 57736821716 78327608446 79135109564 114295340948 115473643432 156655216892 158270219128 200016846659 228590681896 230947286864 241846584841 274146629561 313310433784 316540438256 400033693318 457181363792 483693169682 548293259122 626620867568 800067386636 967386339364 1096586518244 1400117926613 1600134773272 1692926093887 1919026406927 1934772678728 2193173036488 2800235853226 3200269546544 3385852187774 3838052813854 3869545357456 4386346072976 5600471706452 6771704375548 7676105627708 11200943412904 11850482657209 13543408751096 15352211255416 22401886825808 23459118729577 23700965314418 27086817502192 30704422510832 46918237459154 47401930628836 93836474918308 94803861257672 164213831107039 187672949836616 189607722515344 328427662214078 375345899673232 656855324428156 1149496817749273 1313710648856312 2298993635498546 2627421297712624 4597987270997092 9195974541994184 18391949083988368
• Sum of all divisors σ(n): 42000796320451458
• Sum of proper divisors (its aliquot sum) s(n): 23608847236463090
• 18391949083988368 is an abundant number, because the sum of its proper divisors (23608847236463090) is greater than itself. Its abundance is 5216898152474722

Bases of 18391949083988368

• Binary: 1000001010101110110000101010111111000001101000110010000₂
• Hexadecimal: 0x41576157E0D190
• Base-36: 513EGRMJXCG

Squares and roots of 18391949083988368

• 18391949083988368 squared (18391949083988368²) is 338263791108020568752509959303424
• 18391949083988368 cubed (18391949083988368³) is 6221330423015591560102716073455757119016998572032
• The square root of 18391949083988368 is 135616920.3454656243
• The cube root of 18391949083988368 is 263962.7141824319

Scales and comparisons

• 18,391,949,083,988,368 seconds is equal to 584,807,090 years, 43 weeks, 3 days, 16 hours, 19 minutes, 28 seconds.
• To count from 1 to 18,391,949,083,988,368 would take you about one billion, seven hundred fifty-four million, four hundred twenty-one thousand, two hundred seventy-two 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 18391949083988368 cubic inches would be around 21996.9 feet tall.

Recreational maths with 18391949083988368

• 18391949083988368 backwards is 86388938094919381
• 18391949083988368 is a Harshad number.
• The number of decimal digits it has is: 17
• The sum of 18391949083988368's digits is 97
• More coming soon!