18412957 has 8 divisors (see below), whose sum is σ = 19440800. Its totient is φ = 17391024.

The previous prime is 18412951. The next prime is 18412981. The reversal of 18412957 is 75921481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18412957 - 2¹⁵ = 18380189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18412951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5923 + ... + 8479.

It is an arithmetic number, because the mean of its divisors is an integer number (2430100).

Almost surely, 2^18412957 is an apocalyptic number.

It is an amenable number.

18412957 is a deficient number, since it is larger than the sum of its proper divisors (1027843).

18412957 is a wasteful number, since it uses less digits than its factorization.

18412957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2955.

The product of its digits is 20160, while the sum is 37.

The square root of 18412957 is about 4291.0321602151. The cubic root of 18412957 is about 264.0631783674.

The spelling of 18412957 in words is "eighteen million, four hundred twelve thousand, nine hundred fifty-seven".