Base | Representation |
---|---|
bin | 10001101010101001… |
… | …100110100110101000 |
3 | 1210221222211011202100 |
4 | 101222221212212220 |
5 | 302322101110404 |
6 | 12414142533400 |
7 | 1241034125526 |
oct | 215251464650 |
9 | 53858734670 |
10 | 18969160104 |
11 | 8054661824 |
12 | 3814897260 |
13 | 1a33c603bb |
14 | cbd42b316 |
15 | 7604e6d39 |
hex | 46aa669a8 |
18969160104 has 24 divisors (see below), whose sum is σ = 51374808810. Its totient is φ = 6323053344.
The previous prime is 18969160087. The next prime is 18969160181. The reversal of 18969160104 is 40106196981.
It can be written as a sum of positive squares in only one way, i.e., 13294551204 + 5674608900 = 115302^2 + 75330^2 .
It is a tau number, because it is divible by the number of its divisors (24).
It is a self number, because there is not a number n which added to its sum of digits gives 18969160104.
It is an unprimeable number.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 131730207 + ... + 131730350.
Almost surely, 218969160104 is an apocalyptic number.
It is an amenable number.
18969160104 is an abundant number, since it is smaller than the sum of its proper divisors (32405648706).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18969160104 is a wasteful number, since it uses less digits than its factorization.
18969160104 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 263460569 (or 263460562 counting only the distinct ones).
The product of its (nonzero) digits is 93312, while the sum is 45.
The spelling of 18969160104 in words is "eighteen billion, nine hundred sixty-nine million, one hundred sixty thousand, one hundred four".
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