18676413 has 20 divisors (see below), whose sum is σ = 31885920. Its totient is φ = 10671912.

The previous prime is 18676409. The next prime is 18676439. The reversal of 18676413 is 31467681.

18676413 is a `hidden beast` number, since 1 + 8 + 6 + 7 + 641 + 3 = 666.

It is not a de Polignac number, because 18676413 - 2² = 18676409 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18676313) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15903 + ... + 17036.

It is an arithmetic number, because the mean of its divisors is an integer number (1594296).

Almost surely, 2^18676413 is an apocalyptic number.

It is an amenable number.

18676413 is a deficient number, since it is larger than the sum of its proper divisors (13209507).

18676413 is an equidigital number, since it uses as much as digits as its factorization.

18676413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32958 (or 32949 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 18676413 is about 4321.6215706607. The cubic root of 18676413 is about 265.3166406101.

The spelling of 18676413 in words is "eighteen million, six hundred seventy-six thousand, four hundred thirteen".