18804434 has 8 divisors (see below), whose sum is σ = 30770928. Its totient is φ = 8547460.

The previous prime is 18804413. The next prime is 18804437. The reversal of 18804434 is 43440881.

It is a sphenic number, since it is the product of 3 distinct primes.

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 18804434.

It is not an unprimeable number, because it can be changed into a prime (18804437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427352 + ... + 427395.

It is an arithmetic number, because the mean of its divisors is an integer number (3846366).

Almost surely, 2^18804434 is an apocalyptic number.

18804434 is a deficient number, since it is larger than the sum of its proper divisors (11966494).

18804434 is a wasteful number, since it uses less digits than its factorization.

18804434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854760.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 18804434 is about 4336.4079605129. The cubic root of 18804434 is about 265.9214817152.

The spelling of 18804434 in words is "eighteen million, eight hundred four thousand, four hundred thirty-four".