18675394 has 8 divisors (see below), whose sum is σ = 28472508. Its totient is φ = 9184560.

The previous prime is 18675389. The next prime is 18675413. The reversal of 18675394 is 49357681.

It can be written as a sum of positive squares in 2 ways, for example, as 18619225 + 56169 = 4315^2 + 237^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 18675394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76417 + ... + 76660.

Almost surely, 2^18675394 is an apocalyptic number.

18675394 is a deficient number, since it is larger than the sum of its proper divisors (9797114).

18675394 is a wasteful number, since it uses less digits than its factorization.

18675394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153140.

The product of its digits is 181440, while the sum is 43.

The square root of 18675394 is about 4321.5036734914. The cubic root of 18675394 is about 265.3118152265.

The spelling of 18675394 in words is "eighteen million, six hundred seventy-five thousand, three hundred ninety-four".