18456136 has 16 divisors (see below), whose sum is σ = 34651440. Its totient is φ = 9215760.

The previous prime is 18456121. The next prime is 18456157. The reversal of 18456136 is 63165481.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9435 + ... + 11221.

It is an arithmetic number, because the mean of its divisors is an integer number (2165715).

Almost surely, 2^18456136 is an apocalyptic number.

It is an amenable number.

18456136 is a deficient number, since it is larger than the sum of its proper divisors (16195304).

18456136 is a wasteful number, since it uses less digits than its factorization.

18456136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084 (or 3080 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 18456136 is about 4296.0605209890. The cubic root of 18456136 is about 264.2694295577.

The spelling of 18456136 in words is "eighteen million, four hundred fifty-six thousand, one hundred thirty-six".