18998886690

Names of 18998886690

• Cardinal: 18998886690 can be written as Eighteen billion, nine hundred ninety-eight million, eight hundred eighty-six thousand, six hundred ninety.

Scientific notation

• Scientific notation: 1.899888669 × 10¹⁰

Factors of 18998886690

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 1668

Divisors of 18998886690

• Number of divisors d(n): 256
• Complete list of divisors:
  1 2 3 5 6 7 9 10 14 15 17 18 21 27 30 34 35 42 45 51 54 63 70 85 90 102 105 119 126 135 153 170 189 210 238 255 270 306 315 357 378 459 510 541 595 630 714 765 918 945 1071 1082 1093 1190 1530 1623 1785 1890 2142 2186 2295 2705 3213 3246 3279 3570 3787 4590 4869 5355 5410 5465 6426 6558 7574 7651 8115 9197 9738 9837 10710 10930 11361 14607 15302 16065 16230 16395 18394 18581 18935 19674 22722 22953 24345 27591 29214 29511 32130 32790 34083 37162 37870 38255 45906 45985 48690 49185 55182 55743 56805 59022 64379 68166 68859 73035 76510 82773 91970 92905 98370 102249 111486 113610 114765 128758 130067 137718 137955 146070 147555 165546 167229 170415 185810 193137 204498 206577 229530 248319 260134 275910 278715 295110 321895 334458 340830 344295 386274 390201 413154 413865 496638 501687 511245 557430 579411 591313 643790 650335 688590 780402 827730 836145 965685 1003374 1022490 1032885 1158822 1170603 1182626 1241595 1300670 1672290 1738233 1773939 1931370 1951005 2065770 2341206 2483190 2508435 2897055 2956565 3476466 3511809 3547878 3902010 4139191 5016870 5321817 5794110 5853015 5913130 7023618 8278382 8691165 8869695 10052321 10643634 11706030 12417573 15965451 17382330 17559045 17739390 20104642 20695955 24835146 26609085 30156963 31930902 35118090 37252719 41391910 50261605 53218170 60313926 62087865 70366247 74505438 79827255 90470889 100523210 111758157 124175730 140732494 150784815 159654510 180941778 186263595 211098741 223516314 271412667 301569630 351831235 372527190 422197482 452354445 542825334 558790785 633296223 703662470 904708890 1055493705 1117581570 1266592446 1357063335 1899888669 2110987410 2714126670 3166481115 3799777338 6332962230 9499443345 18998886690
• Sum of all divisors σ(n): 61476848640
• Sum of proper divisors (its aliquot sum) s(n): 42477961950
• 18998886690 is an abundant number, because the sum of its proper divisors (42477961950) is greater than itself. Its abundance is 23479075260

Bases of 18998886690

• Binary: 10001101100011011000000000100100010₂
• Hexadecimal: 0x46C6C0122
• Base-36: 8Q7G2SI

Squares and roots of 18998886690

• 18998886690 squared (18998886690²) is 360957695459459156100
• 18998886690 cubed (18998886690³) is 6857794355917791995426922309000
• The square root of 18998886690 is 137836.4490619227
• The cube root of 18998886690 is 2668.3495291383

Scales and comparisons

• 18,998,886,690 seconds is equal to 604 years, 5 weeks, 3 days, 12 hours, 31 minutes, 30 seconds.
• To count from 1 to 18,998,886,690 would take you about one thousand, two hundred eight 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 18998886690 cubic inches would be around 222.4 feet tall.

Recreational maths with 18998886690

• 18998886690 backwards is 09668889981
• The number of decimal digits it has is: 11
• The sum of 18998886690's digits is 72
• More coming soon!