18680975 has 6 divisors (see below), whose sum is σ = 23164440. Its totient is φ = 14944760.

The previous prime is 18680929. The next prime is 18680989. The reversal of 18680975 is 57908681.

It is a happy number.

It is not a de Polignac number, because 18680975 - 2⁶ = 18680911 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 373595 + ... + 373644.

It is an arithmetic number, because the mean of its divisors is an integer number (3860740).

Almost surely, 2^18680975 is an apocalyptic number.

18680975 is a deficient number, since it is larger than the sum of its proper divisors (4483465).

18680975 is an equidigital number, since it uses as much as digits as its factorization.

18680975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747249 (or 747244 counting only the distinct ones).

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

The square root of 18680975 is about 4322.1493495713. The cubic root of 18680975 is about 265.3382414028.

The spelling of 18680975 in words is "eighteen million, six hundred eighty thousand, nine hundred seventy-five".