18519475 has 12 divisors (see below), whose sum is σ = 24731056. Its totient is φ = 13675680.

The previous prime is 18519469. The next prime is 18519497. The reversal of 18519475 is 57491581.

It is a happy number.

It is not a de Polignac number, because 18519475 - 2³ = 18519467 is a prime.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 28167 + ... + 28816.

Almost surely, 2^18519475 is an apocalyptic number.

18519475 is a deficient number, since it is larger than the sum of its proper divisors (6211581).

18519475 is a wasteful number, since it uses less digits than its factorization.

18519475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57006 (or 57001 counting only the distinct ones).

The product of its digits is 50400, while the sum is 40.

The square root of 18519475 is about 4303.4259607898. The cubic root of 18519475 is about 264.5713968754.

The spelling of 18519475 in words is "eighteen million, five hundred nineteen thousand, four hundred seventy-five".