18673964 has 6 divisors (see below), whose sum is σ = 32679444. Its totient is φ = 9336980.

The previous prime is 18673933. The next prime is 18673981. The reversal of 18673964 is 46937681.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2334242 + ... + 2334249.

It is an arithmetic number, because the mean of its divisors is an integer number (5446574).

Almost surely, 2^18673964 is an apocalyptic number.

It is an amenable number.

18673964 is a deficient number, since it is larger than the sum of its proper divisors (14005480).

18673964 is a wasteful number, since it uses less digits than its factorization.

18673964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668495 (or 4668493 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 18673964 is about 4321.3382186540. The cubic root of 18673964 is about 265.3050432930.

The spelling of 18673964 in words is "eighteen million, six hundred seventy-three thousand, nine hundred sixty-four".