18859244 has 6 divisors (see below), whose sum is σ = 33003684. Its totient is φ = 9429620.

The previous prime is 18859231. The next prime is 18859259. The reversal of 18859244 is 44295881.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2357402 + ... + 2357409.

It is an arithmetic number, because the mean of its divisors is an integer number (5500614).

Almost surely, 2^18859244 is an apocalyptic number.

It is an amenable number.

18859244 is a deficient number, since it is larger than the sum of its proper divisors (14144440).

18859244 is a wasteful number, since it uses less digits than its factorization.

18859244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4714815 (or 4714813 counting only the distinct ones).

The product of its digits is 92160, while the sum is 41.

The square root of 18859244 is about 4342.7231088339. The cubic root of 18859244 is about 266.1795949236.

The spelling of 18859244 in words is "eighteen million, eight hundred fifty-nine thousand, two hundred forty-four".