18249117 has 8 divisors (see below), whose sum is σ = 24352224. Its totient is φ = 12156048.

The previous prime is 18249083. The next prime is 18249131. The reversal of 18249117 is 71194281.

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

It is not a de Polignac number, because 18249117 - 2⁶ = 18249053 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249137) 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, 4678 + ... + 7640.

It is an arithmetic number, because the mean of its divisors is an integer number (3044028).

Almost surely, 2^18249117 is an apocalyptic number.

It is an amenable number.

18249117 is a deficient number, since it is larger than the sum of its proper divisors (6103107).

18249117 is a wasteful number, since it uses less digits than its factorization.

18249117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019.

The product of its digits is 4032, while the sum is 33.

The square root of 18249117 is about 4271.8985240757. The cubic root of 18249117 is about 263.2776251685.

The spelling of 18249117 in words is "eighteen million, two hundred forty-nine thousand, one hundred seventeen".