18000249 has 8 divisors (see below), whose sum is σ = 24067200. Its totient is φ = 11966736.

The previous prime is 18000221. The next prime is 18000259. The reversal of 18000249 is 94200081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18000249 - 2⁵ = 18000217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18000209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7074 + ... + 9275.

It is an arithmetic number, because the mean of its divisors is an integer number (3008400).

Almost surely, 2^18000249 is an apocalyptic number.

It is an amenable number.

18000249 is a deficient number, since it is larger than the sum of its proper divisors (6066951).

18000249 is a wasteful number, since it uses less digits than its factorization.

18000249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16719.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18000249 is about 4242.6700319492. The cubic root of 18000249 is about 262.0753478683.

The spelling of 18000249 in words is "eighteen million, two hundred forty-nine", and thus it is an aban number.