Base | Representation |
---|---|
bin | 10000111011100111… |
… | …010111000011001010 |
3 | 1201220222221212112020 |
4 | 100323213113003022 |
5 | 244213042333304 |
6 | 12203553225310 |
7 | 1212342546453 |
oct | 207347270312 |
9 | 51828855466 |
10 | 18180042954 |
11 | 778a184397 |
12 | 3634562236 |
13 | 193961ab88 |
14 | c466d612a |
15 | 7160be5d9 |
hex | 43b9d70ca |
18180042954 has 64 divisors (see below), whose sum is σ = 38958796800. Its totient is φ = 5639070528.
The previous prime is 18180042943. The next prime is 18180042977. The reversal of 18180042954 is 45924008181.
It is a super-2 number, since 2×181800429542 (a number of 21 digits) contains 22 as substring.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1769059 + ... + 1779305.
It is an arithmetic number, because the mean of its divisors is an integer number (608731200).
Almost surely, 218180042954 is an apocalyptic number.
18180042954 is an abundant number, since it is smaller than the sum of its proper divisors (20778753846).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18180042954 is a wasteful number, since it uses less digits than its factorization.
18180042954 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 10547.
The product of its (nonzero) digits is 92160, while the sum is 42.
The spelling of 18180042954 in words is "eighteen billion, one hundred eighty million, forty-two thousand, nine hundred fifty-four".
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