18674718 has 16 divisors (see below), whose sum is σ = 37443216. Its totient is φ = 6209280.

The previous prime is 18674707. The next prime is 18674737. The reversal of 18674718 is 81747681.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18674718.

It is a congruent number.

It is an unprimeable number.

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, 1171 + ... + 6222.

It is an arithmetic number, because the mean of its divisors is an integer number (2340201).

Almost surely, 2^18674718 is an apocalyptic number.

18674718 is an abundant number, since it is smaller than the sum of its proper divisors (18768498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18674718 is a wasteful number, since it uses less digits than its factorization.

18674718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7819.

The product of its digits is 75264, while the sum is 42.

The square root of 18674718 is about 4321.4254592669. The cubic root of 18674718 is about 265.3086139919.

The spelling of 18674718 in words is "eighteen million, six hundred seventy-four thousand, seven hundred eighteen".