18348804 has 18 divisors (see below), whose sum is σ = 46381790. Its totient is φ = 6116256.

The previous prime is 18348773. The next prime is 18348817. The reversal of 18348804 is 40884381.

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 7851204 = 3240^2 + 2802^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 509689 = 18348804 / (1 + 8 + 3 + 4 + 8 + 8 + 0 + 4).

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 5 ways as a sum of consecutive naturals, for example, 254809 + ... + 254880.

Almost surely, 2^18348804 is an apocalyptic number.

It is an amenable number.

18348804 is an abundant number, since it is smaller than the sum of its proper divisors (28032986).

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

18348804 is a wasteful number, since it uses less digits than its factorization.

18348804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509699 (or 509694 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 18348804 is about 4283.5503965753. The cubic root of 18348804 is about 263.7561453462.

The spelling of 18348804 in words is "eighteen million, three hundred forty-eight thousand, eight hundred four".