Base | Representation |
---|---|
bin | 10000110001101010… |
… | …110001001010001001 |
3 | 1201111100221112212111 |
4 | 100301222301022021 |
5 | 243342332223134 |
6 | 12135232342321 |
7 | 1205245240420 |
oct | 206152611211 |
9 | 51440845774 |
10 | 18013164169 |
11 | 7703a63940 |
12 | 35a86a49a1 |
13 | 1910b8c430 |
14 | c2c4962b7 |
15 | 706608c64 |
hex | 431ab1289 |
18013164169 has 32 divisors (see below), whose sum is σ = 24229223424. Its totient is φ = 12933103680.
The previous prime is 18013164161. The next prime is 18013164193. The reversal of 18013164169 is 96146131081.
It is not a de Polignac number, because 18013164169 - 23 = 18013164161 is a prime.
It is a super-2 number, since 2×180131641692 (a number of 21 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (18013164161) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 547582 + ... + 579544.
It is an arithmetic number, because the mean of its divisors is an integer number (757163232).
Almost surely, 218013164169 is an apocalyptic number.
It is an amenable number.
18013164169 is a deficient number, since it is larger than the sum of its proper divisors (6216059255).
18013164169 is a wasteful number, since it uses less digits than its factorization.
18013164169 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 32557.
The product of its (nonzero) digits is 31104, while the sum is 40.
The spelling of 18013164169 in words is "eighteen billion, thirteen million, one hundred sixty-four thousand, one hundred sixty-nine".
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