| Base | Representation |
|---|---|
| bin | 1000100001011010010101… |
| … | …11100010100010010010000 |
| 3 | 2110100112201201211021000000 |
| 4 | 10100231022330110102100 |
| 5 | 4424014412101410120 |
| 6 | 103505043500130000 |
| 7 | 3642635421440400 |
| oct | 420551274242220 |
| 9 | 73315651737000 |
| 10 | 18740199638160 |
| 11 | 5a7574615a000 |
| 12 | 2127b86b36900 |
| 13 | a5c26872a550 |
| 14 | 48b05d9aa800 |
| 15 | 22772022e990 |
| hex | 110b4af14490 |
18740199638160 has 3360 divisors, whose sum is σ = 90252797201280. Its totient is φ = 3585039575040.
The previous prime is 18740199638141. The next prime is 18740199638161. The reversal of 18740199638160 is 6183699104781.
18740199638160 is a `hidden beast` number, since 1 + 8 + 7 + 4 + 0 + 199 + 6 + 381 + 60 = 666.
It is a Harshad number since it is a multiple of its sum of digits (63).
It is not an unprimeable number, because it can be changed into a prime (18740199638161) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 671 ways as a sum of consecutive naturals, for example, 49446436851 + ... + 49446437229.
It is an arithmetic number, because the mean of its divisors is an integer number (26860951548).
Almost surely, 218740199638160 is an apocalyptic number.
18740199638160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 18740199638160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45126398600640).
18740199638160 is an abundant number, since it is smaller than the sum of its proper divisors (71512597563120).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18740199638160 is a wasteful number, since it uses less digits than its factorization.
18740199638160 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 470 (or 420 counting only the distinct ones).
The product of its (nonzero) digits is 15676416, while the sum is 63.
It can be divided in two parts, 18740 and 199638160, that added together give a square (199656900 = 141302).
The spelling of 18740199638160 in words is "eighteen trillion, seven hundred forty billion, one hundred ninety-nine million, six hundred thirty-eight thousand, one hundred sixty".
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