18675613 has 12 divisors (see below), whose sum is σ = 21506688. Its totient is φ = 16080840.

The previous prime is 18675611. The next prime is 18675641. The reversal of 18675613 is 31657681.

It is not a de Polignac number, because 18675613 - 2¹ = 18675611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18675611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1620 + ... + 6322.

It is an arithmetic number, because the mean of its divisors is an integer number (1792224).

Almost surely, 2^18675613 is an apocalyptic number.

It is an amenable number.

18675613 is a deficient number, since it is larger than the sum of its proper divisors (2831075).

18675613 is a wasteful number, since it uses less digits than its factorization.

18675613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4752 (or 4733 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 18675613 is about 4321.5290118198. The cubic root of 18675613 is about 265.3128522963.

The spelling of 18675613 in words is "eighteen million, six hundred seventy-five thousand, six hundred thirteen".