18137163 has 16 divisors (see below), whose sum is σ = 26756352. Its totient is φ = 10836000.

The previous prime is 18137149. The next prime is 18137177. The reversal of 18137163 is 36173181.

It is an interprime number because it is at equal distance from previous prime (18137149) and next prime (18137177).

It is not a de Polignac number, because 18137163 - 2⁸ = 18136907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18137163.

It is not an unprimeable number, because it can be changed into a prime (18135163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1528 + ... + 6213.

It is an arithmetic number, because the mean of its divisors is an integer number (1672272).

Almost surely, 2^18137163 is an apocalyptic number.

18137163 is a deficient number, since it is larger than the sum of its proper divisors (8619189).

18137163 is a wasteful number, since it uses less digits than its factorization.

18137163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7826.

The product of its digits is 3024, while the sum is 30.

The square root of 18137163 is about 4258.7748238196. The cubic root of 18137163 is about 262.7381385452.

The spelling of 18137163 in words is "eighteen million, one hundred thirty-seven thousand, one hundred sixty-three".