18675506 has 16 divisors (see below), whose sum is σ = 28788480. Its totient is φ = 9082800.

The previous prime is 18675487. The next prime is 18675533. The reversal of 18675506 is 60557681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18675506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11135 + ... + 12701.

It is an arithmetic number, because the mean of its divisors is an integer number (1799280).

Almost surely, 2^18675506 is an apocalyptic number.

18675506 is a deficient number, since it is larger than the sum of its proper divisors (10112974).

18675506 is a wasteful number, since it uses less digits than its factorization.

18675506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 18675506 is about 4321.5166319245. The cubic root of 18675506 is about 265.3123456011.

The spelling of 18675506 in words is "eighteen million, six hundred seventy-five thousand, five hundred six".