18675418 has 16 divisors (see below), whose sum is σ = 30386664. Its totient is φ = 8573440.

The previous prime is 18675413. The next prime is 18675427. The reversal of 18675418 is 81457681.

It can be written as a sum of positive squares in 4 ways, for example, as 8543929 + 10131489 = 2923^2 + 3183^2 .

It is not an unprimeable number, because it can be changed into a prime (18675413) 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, 5305 + ... + 8092.

Almost surely, 2^18675418 is an apocalyptic number.

18675418 is a deficient number, since it is larger than the sum of its proper divisors (11711246).

18675418 is a wasteful number, since it uses less digits than its factorization.

18675418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13457.

The product of its digits is 53760, while the sum is 40.

The square root of 18675418 is about 4321.5064503018. The cubic root of 18675418 is about 265.3119288784.

The spelling of 18675418 in words is "eighteen million, six hundred seventy-five thousand, four hundred eighteen".