Base | Representation |
---|---|
bin | 10000110100111111… |
… | …101101000100111000 |
3 | 1201122020222111110002 |
4 | 100310333231010320 |
5 | 244001124442440 |
6 | 12144545012132 |
7 | 1206523554665 |
oct | 206477550470 |
9 | 51566874402 |
10 | 18068984120 |
11 | 773251a230 |
12 | 3603324048 |
13 | 191c6048a5 |
14 | c35a66a6c |
15 | 70b483115 |
hex | 434fed138 |
18068984120 has 32 divisors (see below), whose sum is σ = 44351143920. Its totient is φ = 6570539520.
The previous prime is 18068984113. The next prime is 18068984179. The reversal of 18068984120 is 2148986081.
It is a happy number.
It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20532497 + ... + 20533376.
Almost surely, 218068984120 is an apocalyptic number.
18068984120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
18068984120 is an abundant number, since it is smaller than the sum of its proper divisors (26282159800).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18068984120 is a wasteful number, since it uses less digits than its factorization.
18068984120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 41065895 (or 41065891 counting only the distinct ones).
The product of its (nonzero) digits is 221184, while the sum is 47.
The spelling of 18068984120 in words is "eighteen billion, sixty-eight million, nine hundred eighty-four thousand, one hundred twenty".
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