18804916 has 24 divisors (see below), whose sum is σ = 35794304. Its totient is φ = 8592480.

The previous prime is 18804913. The next prime is 18804943. The reversal of 18804916 is 61940881.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18804911) 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, 3601 + ... + 7111.

Almost surely, 2^18804916 is an apocalyptic number.

It is an amenable number.

18804916 is a deficient number, since it is larger than the sum of its proper divisors (16989388).

18804916 is a wasteful number, since it uses less digits than its factorization.

18804916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3631 (or 3629 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18804916 is about 4336.4635361087. The cubic root of 18804916 is about 265.9237537513.

The spelling of 18804916 in words is "eighteen million, eight hundred four thousand, nine hundred sixteen".