18506875 has 10 divisors (see below), whose sum is σ = 23126972. Its totient is φ = 14805000.

The previous prime is 18506869. The next prime is 18506903. The reversal of 18506875 is 57860581.

It is not a de Polignac number, because 18506875 - 2¹⁵ = 18474107 is a prime.

It is a Duffinian 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 9 ways as a sum of consecutive naturals, for example, 14181 + ... + 15430.

Almost surely, 2^18506875 is an apocalyptic number.

18506875 is a deficient number, since it is larger than the sum of its proper divisors (4620097).

18506875 is an frugal number, since it uses more digits than its factorization.

18506875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29631 (or 29616 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 18506875 is about 4301.9617618012. The cubic root of 18506875 is about 264.5113815689.

The spelling of 18506875 in words is "eighteen million, five hundred six thousand, eight hundred seventy-five".