18612957 has 32 divisors (see below), whose sum is σ = 28615680. Its totient is φ = 10651520.

The previous prime is 18612947. The next prime is 18612959. The reversal of 18612957 is 75921681.

It is not a de Polignac number, because 18612957 - 2⁴ = 18612941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18612959) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 103894 + ... + 104072.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^18612957 is an apocalyptic number.

It is an amenable number.

18612957 is a deficient number, since it is larger than the sum of its proper divisors (10002723).

18612957 is a wasteful number, since it uses less digits than its factorization.

18612957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353.

The product of its digits is 30240, while the sum is 39.

The square root of 18612957 is about 4314.2736352716. The cubic root of 18612957 is about 265.0158148862.

The spelling of 18612957 in words is "eighteen million, six hundred twelve thousand, nine hundred fifty-seven".