18974575 has 12 divisors (see below), whose sum is σ = 23609848. Its totient is φ = 15127200.

The previous prime is 18974561. The next prime is 18974581. The reversal of 18974575 is 57547981.

It is a happy number.

It is not a de Polignac number, because 18974575 - 2⁹ = 18974063 is a prime.

It is a Duffinian number.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 7129 + ... + 9421.

Almost surely, 2^18974575 is an apocalyptic number.

18974575 is a deficient number, since it is larger than the sum of its proper divisors (4635273).

18974575 is a wasteful number, since it uses less digits than its factorization.

18974575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2634 (or 2629 counting only the distinct ones).

The product of its digits is 352800, while the sum is 46.

The square root of 18974575 is about 4355.9815197037. The cubic root of 18974575 is about 266.7210869836.

The spelling of 18974575 in words is "eighteen million, nine hundred seventy-four thousand, five hundred seventy-five".