18504934 has 16 divisors (see below), whose sum is σ = 32398848. Its totient is φ = 7761672.

The previous prime is 18504919. The next prime is 18504953. The reversal of 18504934 is 43940581.

It is a self number, because there is not a number n which added to its sum of digits gives 18504934.

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, 13404 + ... + 14719.

It is an arithmetic number, because the mean of its divisors is an integer number (2024928).

Almost surely, 2^18504934 is an apocalyptic number.

18504934 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18504934 is a deficient number, since it is larger than the sum of its proper divisors (13893914).

18504934 is a wasteful number, since it uses less digits than its factorization.

18504934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28179.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 18504934 is about 4301.7361611331. The cubic root of 18504934 is about 264.5021339327.

The spelling of 18504934 in words is "eighteen million, five hundred four thousand, nine hundred thirty-four".