18504850 has 96 divisors (see below), whose sum is σ = 43747200. Its totient is φ = 5785920.

The previous prime is 18504839. The next prime is 18504851. The reversal of 18504850 is 5840581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18504851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 222909 + ... + 222991.

It is an arithmetic number, because the mean of its divisors is an integer number (455700).

Almost surely, 2^18504850 is an apocalyptic number.

18504850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18504850 is an abundant number, since it is smaller than the sum of its proper divisors (25242350).

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

18504850 is a wasteful number, since it uses less digits than its factorization.

18504850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 110 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 31.

The square root of 18504850 is about 4301.7263976222. The cubic root of 18504850 is about 264.5017337112.

The spelling of 18504850 in words is "eighteen million, five hundred four thousand, eight hundred fifty".