1918428138

Names of 1918428138

• Cardinal: 1918428138 can be written as One billion, nine hundred eighteen million, four hundred twenty-eight thousand, one hundred thirty-eight.

Scientific notation

• Scientific notation: 1.918428138 × 10⁹

Factors of 1918428138

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 153

Divisors of 1918428138

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 3 6 9 11 17 18 19 22 27 33 34 38 51 54 57 66 81 99 101 102 114 121 153 162 171 187 198 202 209 242 243 297 303 306 323 342 363 374 418 459 486 513 561 594 606 627 646 726 891 909 918 969 1026 1089 1111 1122 1254 1377 1539 1683 1717 1782 1818 1881 1919 1938 2057 2178 2222 2299 2673 2727 2754 2907 3078 3267 3333 3366 3434 3553 3762 3838 4114 4131 4598 4617 5049 5151 5346 5454 5643 5757 5814 6171 6534 6666 6897 7106 8181 8262 8721 9234 9801 9999 10098 10302 10659 11286 11514 12221 12342 13794 15147 15453 16362 16929 17271 17442 18513 18887 19602 19998 20691 21109 21318 24442 24543 26163 29403 29997 30294 30906 31977 32623 33858 34542 36663 37026 37774 39083 41382 42218 45441 46359 49086 50787 51813 52326 55539 56661 58806 59994 62073 63327 63954 65246 73326 78166 78489 89991 90882 92718 95931 97869 101574 103626 109989 111078 113322 117249 124146 126654 139077 155439 156978 166617 169983 179982 186219 189981 191862 195738 207757 219978 232199 234498 269973 278154 287793 293607 310878 329967 333234 339966 351747 358853 372438 379962 415514 417231 464398 466317 499851 509949 539946 558657 569943 575586 587214 623271 659934 696597 703494 717706 834462 863379 880821 932634 989901 999702 1019898 1055241 1076559 1117314 1139886 1246542 1393194 1529847 1709829 1726758 1761642 1869813 1979802 2089791 2110482 2153118 2642463 2969703 3059694 3165723 3229677 3419658 3739626 3947383 4179582 4589541 5129487 5284926 5609439 5939406 6269373 6331446 6459354 7894766 7927389 9179082 9497169 9689031 10258974 11218878 11842149 12538746 15854778 16828317 18808119 18994338 19378062 23684298 29067093 33656634 35526447 37616238 50484951 56424357 58134186 71052894 87201279 100969902 106579341 112848714 174402558 213158682 319738023 639476046 959214069 1918428138
• Sum of all divisors σ(n): 5333065920
• Sum of proper divisors (its aliquot sum) s(n): 3414637782
• 1918428138 is an abundant number, because the sum of its proper divisors (3414637782) is greater than itself. Its abundance is 1496209644

Bases of 1918428138

• Binary: 1110010010110001110001111101010₂
• Hexadecimal: 0x7258E3EA
• Base-36: VQ6KMI

Squares and roots of 1918428138

• 1918428138 squared (1918428138²) is 3680366520670147044
• 1918428138 cubed (1918428138³) is 7060518691406768705807124072
• The square root of 1918428138 is 43799.8645888317
• The cube root of 1918428138 is 1242.5537333431

Scales and comparisons

• 1,918,428,138 seconds is equal to 61 years, 42 minutes, 18 seconds.
• To count from 1 to 1,918,428,138 would take you about one hundred twenty-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 1918428138 cubic inches would be around 103.5 feet tall.

Recreational maths with 1918428138

• 1918428138 backwards is 8318248191
• The number of decimal digits it has is: 10
• The sum of 1918428138's digits is 45
• More coming soon!