18803144 has 16 divisors (see below), whose sum is σ = 36789120. Its totient is φ = 8992720.

The previous prime is 18803131. The next prime is 18803171. The reversal of 18803144 is 44130881.

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 3 ways as a sum of consecutive naturals, for example, 50912 + ... + 51279.

It is an arithmetic number, because the mean of its divisors is an integer number (2299320).

Almost surely, 2^18803144 is an apocalyptic number.

It is an amenable number.

18803144 is a deficient number, since it is larger than the sum of its proper divisors (17985976).

18803144 is a wasteful number, since it uses less digits than its factorization.

18803144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102220 (or 102216 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 18803144 is about 4336.2592173439. The cubic root of 18803144 is about 265.9154007636.

The spelling of 18803144 in words is "eighteen million, eight hundred three thousand, one hundred forty-four".