138938985990

Names of 138938985990

• Cardinal: 138938985990 can be written as One hundred thirty-eight billion, nine hundred thirty-eight million, nine hundred eighty-five thousand, nine hundred ninety.

Scientific notation

• Scientific notation: 1.3893898599 × 10¹¹

Factors of 138938985990

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 317

Divisors of 138938985990

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 18 19 21 27 30 35 38 42 45 49 54 57 63 70 90 95 98 105 114 126 133 135 147 171 189 190 210 245 266 270 281 285 294 315 342 343 378 399 441 490 513 562 570 630 665 686 735 798 843 855 882 931 945 1026 1029 1197 1323 1330 1405 1470 1686 1710 1715 1862 1890 1967 1995 2058 2205 2394 2529 2565 2646 2793 2810 3087 3430 3591 3934 3990 4215 4410 4655 5058 5130 5145 5339 5586 5901 5985 6174 6517 6615 7182 7587 8379 8430 9261 9310 9835 10290 10678 11802 11970 12645 13034 13230 13769 13965 15174 15435 16017 16758 17703 17955 18522 19551 19670 25137 25290 26695 27538 27930 29505 30870 32034 32585 35406 35910 37373 37935 39102 41307 41895 46305 48051 50274 53109 53390 58653 59010 65170 68845 74746 75870 78961 80085 82614 83790 88515 92610 96102 96383 97755 106218 112119 117306 123921 125685 137690 144153 157922 160170 175959 177030 186865 192766 195510 206535 224238 236883 240255 247842 251370 261611 265545 288306 289149 293265 336357 351918 371763 373730 394805 413070 473766 480510 481915 523222 531090 552727 560595 578298 586530 619605 672714 710649 720765 743526 784833 789610 867447 879795 963830 1009071 1105454 1121190 1184415 1239210 1308055 1421298 1441530 1445745 1500259 1569666 1658181 1681785 1734894 1759590 1831277 1858815 2018142 2131947 2354499 2368830 2602341 2616110 2763635 2891490 3000518 3316362 3363570 3553245 3662554 3717630 3869089 3924165 4263894 4337235 4500777 4708998 4974543 5045355 5204682 5493831 5527270 7063497 7106490 7501295 7738178 7848330 8290905 8674470 9001554 9156385 9949086 10090710 10501813 10659735 10987662 11607267 11772495 13011705 13502331 14126994 14923629 15002590 16481493 16581810 18312770 19345445 21003626 21319470 22503885 23214534 23544990 24872715 26023410 27004662 27083623 27469155 29847258 31505439 32962986 34821801 35317485 38690890 40506993 45007770 49444479 49745430 52509065 54167246 54938310 58036335 63010878 67511655 69643602 70634970 73512691 74618145 81013986 81250869 82407465 94516317 98888958 104465403 105018130 116072670 135023310 135418115 147025382 149236290 157527195 162501738 164814930 174109005 189032634 202534965 208930806 220538073 243752607 247222395 270836230 283548951 315054390 348218010 367563455 405069930 406254345 441076146 472581585 487505214 494444790 514588837 522327015 567097902 661614219 731257821 735126910 812508690 945163170 1029177674 1044654030 1102690365 1218763035 1323228438 1417744755 1462515642 1543766511 1984842657 2205380730 2437526070 2572944185 2835489510 3087533022 3308071095 3656289105 3969685314 4631299533 5145888370 6616142190 7312578210 7718832555 9262599066 9924213285 13893898599 15437665110 19848426570 23156497665 27787797198 46312995330 69469492995 138938985990
• Sum of all divisors σ(n): 456439680000
• Sum of proper divisors (its aliquot sum) s(n): 317500694010
• 138938985990 is an abundant number, because the sum of its proper divisors (317500694010) is greater than itself. Its abundance is 178561708020

Bases of 138938985990

• Binary: 10000001011001011010001010111000000110₂
• Hexadecimal: 0x205968AE06
• Base-36: 1RTSONPI

Squares and roots of 138938985990

• 138938985990 squared (138938985990²) is 19304041827929416280100
• 138938985990 cubed (138938985990³) is 2682083997081059159249691815799000
• The square root of 138938985990 is 372745.2025043381
• The cube root of 138938985990 is 5179.3434217723

Scales and comparisons

• 138,938,985,990 seconds is equal to 4,417 years, 43 weeks, 1 day, 2 hours, 46 minutes, 30 seconds.
• To count from 1 to 138,938,985,990 would take you about eight thousand, eight hundred thirty-five 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 138938985990 cubic inches would be around 431.6 feet tall.

Recreational maths with 138938985990

• 138938985990 backwards is 099589839831
• The number of decimal digits it has is: 12
• The sum of 138938985990's digits is 72
• More coming soon!