18618440490

Names of 18618440490

• Cardinal: 18618440490 can be written as Eighteen billion, six hundred eighteen million, four hundred forty thousand, four hundred ninety.

Scientific notation

• Scientific notation: 1.861844049 × 10¹⁰

Factors of 18618440490

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 606

Divisors of 18618440490

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 3 5 6 9 10 13 15 18 26 27 30 39 45 53 54 65 73 78 81 90 106 117 130 135 146 159 162 195 219 234 265 270 318 351 365 390 405 438 457 477 530 585 657 689 702 730 795 810 914 949 954 1053 1095 1170 1314 1371 1378 1431 1590 1755 1898 1971 2067 2106 2190 2285 2385 2742 2847 2862 3285 3445 3510 3869 3942 4113 4134 4293 4570 4745 4770 5265 5694 5913 5941 6201 6570 6855 6890 7155 7738 8226 8541 8586 9490 9855 10335 10530 11607 11826 11882 12339 12402 13710 14235 14310 17082 17823 18603 19345 19710 20565 20670 21465 23214 24221 24678 25623 28470 29565 29705 31005 33361 34821 35646 37017 37206 38690 41130 42705 42930 48442 50297 51246 53469 55809 58035 59130 59410 61695 62010 66722 69642 72663 74034 76869 85410 89115 93015 100083 100594 104463 106938 111618 116070 121105 123390 128115 145326 150891 153738 160407 166805 174105 178230 185085 186030 200166 208926 217989 242210 251485 256230 267345 279045 300249 301782 313389 314873 320814 333610 348210 363315 370170 384345 433693 435978 452673 481221 500415 502970 522315 534690 558090 600498 626778 629746 653967 726630 754455 768690 802035 867386 900747 905346 944619 962442 1000830 1044630 1089945 1301079 1307934 1358019 1501245 1508910 1566945 1574365 1604070 1768133 1801494 1889238 1961901 2168465 2179890 2263365 2406105 2602158 2702241 2716038 2833857 3002490 3133890 3148730 3269835 3536266 3903237 3923802 4074057 4336930 4503735 4526730 4723095 4812210 5304399 5404482 5667714 6505395 6539670 6790095 7806474 8148114 8501571 8840665 9007470 9446190 9809505 10608798 11709711 13010790 13511205 13580190 14169285 15913197 17003142 17681330 19516185 19619010 20370285 22985729 23419422 25504713 26521995 27022410 28338570 31826394 35129133 39032370 40740570 42507855 45971458 47739591 51009426 53043990 58548555 68957187 70258266 79565985 85015710 95479182 114928645 117097110 127523565 137914374 143218773 159131970 175645665 206871561 229857290 238697955 255047130 286437546 344785935 351291330 413743122 477395910 620614683 689571870 716093865 1034357805 1241229366 1432187730 1861844049 2068715610 3103073415 3723688098 6206146830 9309220245 18618440490
• Sum of all divisors σ(n): 55805482656
• Sum of proper divisors (its aliquot sum) s(n): 37187042166
• 18618440490 is an abundant number, because the sum of its proper divisors (37187042166) is greater than itself. Its abundance is 18568601676

Bases of 18618440490

• Binary: 10001010101101111101101101100101010₂
• Hexadecimal: 0x455BEDB2A
• Base-36: 8JWXSMI

Squares and roots of 18618440490

• 18618440490 squared (18618440490²) is 346646326279671440100
• 18618440490 cubed (18618440490³) is 6454013996915185804254449649000
• The square root of 18618440490 is 136449.4063380269
• The cube root of 18618440490 is 2650.4183741965

Scales and comparisons

• 18,618,440,490 seconds is equal to 592 years, 3 days, 5 hours, 1 minute, 30 seconds.
• To count from 1 to 18,618,440,490 would take you about one thousand, one hundred eighty-four 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 18618440490 cubic inches would be around 220.9 feet tall.

Recreational maths with 18618440490

• 18618440490 backwards is 09404481681
• 18618440490 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 18618440490's digits is 45
• More coming soon!