18676609 has 8 divisors (see below), whose sum is σ = 22080960. Its totient is φ = 15456336.

The previous prime is 18676597. The next prime is 18676633. The reversal of 18676609 is 90667681.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18676609 - 2⁷ = 18676481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18676649) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 45799 + ... + 46204.

It is an arithmetic number, because the mean of its divisors is an integer number (2760120).

Almost surely, 2^18676609 is an apocalyptic number.

It is an amenable number.

18676609 is a deficient number, since it is larger than the sum of its proper divisors (3404351).

18676609 is an equidigital number, since it uses as much as digits as its factorization.

18676609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92039.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 18676609 is about 4321.6442472744. The cubic root of 18676609 is about 265.3175687305.

The spelling of 18676609 in words is "eighteen million, six hundred seventy-six thousand, six hundred nine".