19978616385

Names of 19978616385

• Cardinal: 19978616385 can be written as Nineteen billion, nine hundred seventy-eight million, six hundred sixteen thousand, three hundred eighty-five.

Scientific notation

• Scientific notation: 1.9978616385 × 10¹⁰

Factors of 19978616385

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 88

Divisors of 19978616385

• Number of divisors d(n): 480
• Complete list of divisors:
  1 3 5 7 9 13 15 21 23 27 35 37 39 45 49 63 65 69 81 91 105 111 115 117 135 147 161 169 185 189 195 207 245 259 273 299 315 333 343 345 351 405 441 455 481 483 507 555 567 585 621 637 735 777 805 819 845 851 897 945 999 1029 1035 1053 1127 1183 1295 1323 1365 1443 1449 1495 1521 1665 1715 1755 1813 1863 1911 2093 2205 2331 2405 2415 2457 2535 2553 2691 2835 2997 3087 3105 3185 3367 3381 3549 3885 3887 3969 4095 4255 4329 4347 4459 4485 4563 4995 5145 5265 5439 5635 5733 5915 5957 6253 6279 6615 6993 7215 7245 7371 7605 7659 7889 8073 8281 9065 9261 9315 9555 10101 10143 10465 10647 11063 11655 11661 12285 12691 12765 12987 13041 13377 13455 13689 14651 14985 15435 16317 16835 16905 17199 17745 17871 18759 18837 19435 19845 20979 21645 21735 22295 22815 22977 23569 23667 24219 24843 27195 27209 27783 28665 29785 30303 30429 31265 31395 31941 33189 34965 34983 36855 38073 38295 38961 39445 40131 40365 41405 41699 43771 43953 46305 48951 50505 50715 51597 53235 53613 55315 56277 56511 57967 58305 63455 64935 65205 66885 68445 68931 70707 71001 73255 74529 77441 81585 81627 85995 89355 90909 91287 93795 94185 95823 99567 102557 104895 104949 114219 114885 117845 118335 120393 121095 124215 125097 131313 131859 136045 138915 143819 146853 151515 152145 159705 160839 164983 165945 168831 169533 173901 174915 190365 190463 194805 200655 208495 212121 213003 218855 219765 223587 232323 244755 244881 257985 268065 272727 281385 282555 289835 291893 298701 306397 307671 314847 342657 344655 353535 355005 361179 372645 375291 387205 393939 395577 408135 431457 454545 456435 479115 482517 494949 497835 506493 512785 521703 524745 542087 571095 571389 601965 625485 636363 639009 656565 659295 670761 696969 719095 734265 734643 804195 824915 844155 847665 869505 875679 896103 919191 923013 952315 1006733 1027971 1060605 1065015 1117935 1125873 1161615 1181817 1186731 1224405 1294371 1333241 1363635 1459465 1484847 1493505 1531985 1538355 1565109 1574235 1626261 1713285 1714167 1805895 1876455 1909089 1969695 1977885 2090907 2144779 2157285 2203929 2412585 2474745 2532465 2608515 2627037 2710435 2757573 2769039 2856945 3020199 3181815 3195045 3353805 3377619 3484845 3545451 3673215 3794609 3883113 3999723 4378395 4454541 4480515 4595955 4615065 4695327 4878783 5033665 5139855 5142501 5629365 5909085 5933655 6272721 6434337 6471855 6666205 7047131 7424235 7825545 7881111 8131305 8272719 8307117 8570835 9060597 9545445 10454535 10723895 11019645 11383827 11649339 11999169 13135185 13363623 13787865 13845195 14636349 15100995 15427503 16888095 17727255 18973045 19303011 19415565 19998615 21141393 22272705 23476635 23643333 24393915 24818157 25712505 27181791 31363605 32171685 34151481 35235655 35997507 39405555 41363595 41535585 43909047 45302985 49329917 56919135 57909033 58246695 59995845 63424179 66818115 73181745 77137515 81545373 96515055 102454443 105706965 107992521 118216665 124090785 135908955 147989751 170757405 173727099 179987535 190272537 219545235 246649585 289545165 307363329 317120895 407726865 443969253 512272215 539962605 570817611 739948755 868635495 951362685 1331907759 1536816645 2219846265 2854088055 3995723277 6659538795 19978616385
• Sum of all divisors σ(n): 48466598400
• Sum of proper divisors (its aliquot sum) s(n): 28487982015
• 19978616385 is an abundant number, because the sum of its proper divisors (28487982015) is greater than itself. Its abundance is 8509365630

Bases of 19978616385

• Binary: 10010100110110100010111111001000001₂
• Hexadecimal: 0x4A6D17E41
• Base-36: 96ER329

Squares and roots of 19978616385

• 19978616385 squared (19978616385²) is 399145112658990468225
• 19978616385 cubed (19978616385³) is 7974367087761577886038806866625
• The square root of 19978616385 is 141345.7335224519
• The cube root of 19978616385 is 2713.4498705935

Scales and comparisons

• 19,978,616,385 seconds is equal to 635 years, 13 weeks, 2 days, 23 hours, 39 minutes, 45 seconds.
• To count from 1 to 19,978,616,385 would take you about one thousand, two hundred seventy 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 19978616385 cubic inches would be around 226.1 feet tall.

Recreational maths with 19978616385

• 19978616385 backwards is 58361687991
• 19978616385 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 19978616385's digits is 63
• More coming soon!