18908675 has 12 divisors (see below), whose sum is σ = 24826536. Its totient is φ = 14236800.

The previous prime is 18908663. The next prime is 18908693. The reversal of 18908675 is 57680981.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-18908675 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 (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21821 + ... + 22670.

It is an arithmetic number, because the mean of its divisors is an integer number (2068878).

Almost surely, 2^18908675 is an apocalyptic number.

18908675 is a deficient number, since it is larger than the sum of its proper divisors (5917861).

18908675 is a wasteful number, since it uses less digits than its factorization.

18908675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44518 (or 44513 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 18908675 is about 4348.4106291840. The cubic root of 18908675 is about 266.4119486129.

The spelling of 18908675 in words is "eighteen million, nine hundred eight thousand, six hundred seventy-five".