18143044 has 12 divisors (see below), whose sum is σ = 33130944. Its totient is φ = 8677064.

The previous prime is 18143039. The next prime is 18143051. The reversal of 18143044 is 44034181.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 98512 + ... + 98695.

It is an arithmetic number, because the mean of its divisors is an integer number (2760912).

Almost surely, 2^18143044 is an apocalyptic number.

It is an amenable number.

18143044 is a deficient number, since it is larger than the sum of its proper divisors (14987900).

18143044 is a wasteful number, since it uses less digits than its factorization.

18143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197234 (or 197232 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 18143044 is about 4259.4652246497. The cubic root of 18143044 is about 262.7665332105.

The spelling of 18143044 in words is "eighteen million, one hundred forty-three thousand, forty-four".