18891342990
18,891,342,990 is an even composite number composed of seven prime numbers multiplied together.
18891342990 is an even composite number. It is composed of seven distinct prime numbers multiplied together. It has a total of three hundred eighty-four divisors.
Prime factorization of 18891342990:
2 × 33 × 5 × 13 × 17 × 192 × 877
(2 × 3 × 3 × 3 × 5 × 13 × 17 × 19 × 19 × 877)See below for interesting mathematical facts about the number 18891342990 from the Numbermatics database.
Names of 18891342990
- Cardinal: 18891342990 can be written as Eighteen billion, eight hundred ninety-one million, three hundred forty-two thousand, nine hundred ninety.
Scientific notation
- Scientific notation: 1.889134299 × 1010
Factors of 18891342990
Divisors of 18891342990
- Number of divisors d(n): 384
-
Complete list of divisors:
1 2 3 5 6 9 10 13 15 17 18 19 26 27 30 34 38 39 45 51 54 57 65 78 85 90 95 102 114 117 130 135 153 170 171 190 195 221 234 247 255 270 285 306 323 342 351 361 390 442 459 494 510 513 570 585 646 663 702 722 741 765 855 877 918 969 1026 1083 1105 1170 1235 1326 1482 1530 1615 1710 1754 1755 1805 1938 1989 2166 2210 2223 2295 2470 2565 2631 2907 3230 3249 3315 3510 3610 3705 3978 4199 4385 4446 4590 4693 4845 5130 5262 5415 5814 5967 6137 6498 6630 6669 7410 7893 8398 8721 8770 9386 9690 9747 9945 10830 11115 11401 11934 12274 12597 13155 13338 14079 14535 14909 15786 16245 16663 17442 18411 19494 19890 20995 22230 22802 23465 23679 25194 26310 28158 29070 29818 29835 30685 32490 33326 33345 34203 36822 37791 39465 41990 42237 43605 44727 46930 47358 48735 49989 55233 57005 59670 61370 62985 66690 68406 70395 74545 75582 78930 79781 83315 84474 87210 89454 92055 97470 99978 102609 110466 113373 114010 118395 125970 126711 134181 140790 149090 149967 159562 165699 166630 171015 184110 188955 193817 205218 211185 216619 223635 226746 236790 239343 249945 253422 268362 276165 283271 299934 307827 316597 331398 342030 377910 387634 398905 402543 422370 433238 447270 449901 478686 499890 513045 552330 566542 566865 581451 615654 633194 633555 649857 670905 718029 749835 797810 805086 828495 849813 899802 949791 969085 1026090 1083095 1133730 1162902 1196715 1267110 1299714 1341810 1416355 1436058 1499670 1539135 1582985 1656990 1699626 1744353 1899582 1938170 1949571 2012715 2154087 2166190 2249505 2393430 2549439 2832710 2849373 2907255 3078270 3165970 3249285 3488706 3590145 3682523 3899142 4025430 4115761 4249065 4308174 4499010 4748955 5098878 5233059 5382149 5698746 5814510 5848713 6498570 7180290 7365046 7648317 8231522 8498130 8548119 8721765 9497910 9747855 10466118 10764298 10770435 11047569 11697426 12347283 12747195 14246865 15296634 16146447 17096238 17443530 18412615 19495710 20578805 21540870 22095138 24694566 25494390 26165295 26910745 28493730 29243565 32292894 33142707 36825230 37041849 38241585 41157610 42740595 48439341 52330590 53821490 55237845 58487130 61736415 66285414 69967937 74083698 76483170 80732235 85481190 96878682 99428121 110475690 111125547 123472830 139935874 145318023 161464470 165713535 185209245 198856242 209903811 222251094 242196705 290636046 331427070 349839685 370418490 419807622 484393410 497140605 555627735 629711433 699679370 726590115 994281210 1049519055 1111255470 1259422866 1453180230 1889134299 2099038110 3148557165 3778268598 6297114330 9445671495 18891342990
- Sum of all divisors σ(n): 60694945920
- Sum of proper divisors (its aliquot sum) s(n): 41803602930
- 18891342990 is an abundant number, because the sum of its proper divisors (41803602930) is greater than itself. Its abundance is 22912259940
Bases of 18891342990
- Binary: 100011001100000001100000100100011102
- Hexadecimal: 0x46603048E
- Base-36: 8OFF1JI
Squares and roots of 18891342990
- 18891342990 squared (188913429902) is 356882839965822140100
- 18891342990 cubed (188913429903) is 6741996137039625925964932899000
-
The
square root of 18891342990 is 137445.7820014859 -
The
cube root of 18891342990 is 2663.3052450311
Scales and comparisons
How big is 18891342990?- 18,891,342,990 seconds is equal to 600 years, 35 weeks, 4 days, 19 hours, 16 minutes, 30 seconds.
-
To count from 1 to 18,891,342,990 would take you about one thousand, two hundred one 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 18891342990 cubic inches would be around 221.9 feet tall.
Recreational maths with 18891342990
- 18891342990 backwards is 09924319881
- 18891342990 is a
Harshad number . - The number of decimal digits it has is: 11
- The sum of 18891342990's digits is 54
- More coming soon!
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The information we have on file for 18891342990 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!
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