18249166 has 16 divisors (see below), whose sum is σ = 30762144. Its totient is φ = 8056224.

The previous prime is 18249137. The next prime is 18249167. The reversal of 18249166 is 66194281.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18249167) 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, 14661 + ... + 15856.

It is an arithmetic number, because the mean of its divisors is an integer number (1922634).

Almost surely, 2^18249166 is an apocalyptic number.

18249166 is a deficient number, since it is larger than the sum of its proper divisors (12512978).

18249166 is a wasteful number, since it uses less digits than its factorization.

18249166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30555.

The product of its digits is 20736, while the sum is 37.

The square root of 18249166 is about 4271.9042592268. The cubic root of 18249166 is about 263.2778608072.

The spelling of 18249166 in words is "eighteen million, two hundred forty-nine thousand, one hundred sixty-six".