18135465 has 32 divisors (see below), whose sum is σ = 30683136. Its totient is φ = 9132480.

The previous prime is 18135457. The next prime is 18135499. The reversal of 18135465 is 56453181.

It is not a de Polignac number, because 18135465 - 2³ = 18135457 is a prime.

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, 19542 + ... + 20448.

It is an arithmetic number, because the mean of its divisors is an integer number (958848).

Almost surely, 2^18135465 is an apocalyptic number.

18135465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18135465 is a deficient number, since it is larger than the sum of its proper divisors (12547671).

18135465 is a wasteful number, since it uses less digits than its factorization.

18135465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 14400, while the sum is 33.

The square root of 18135465 is about 4258.5754660450. The cubic root of 18135465 is about 262.7299391136.

The spelling of 18135465 in words is "eighteen million, one hundred thirty-five thousand, four hundred sixty-five".