18009182 has 4 divisors (see below), whose sum is σ = 27013776. Its totient is φ = 9004590.

The previous prime is 18009181. The next prime is 18009191. The reversal of 18009182 is 28190081.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18009181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4502294 + ... + 4502297.

It is an arithmetic number, because the mean of its divisors is an integer number (6753444).

Almost surely, 2^18009182 is an apocalyptic number.

18009182 is a deficient number, since it is larger than the sum of its proper divisors (9004594).

18009182 is an equidigital number, since it uses as much as digits as its factorization.

18009182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9004593.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 18009182 is about 4243.7226582330. The cubic root of 18009182 is about 262.1186941559.

The spelling of 18009182 in words is "eighteen million, nine thousand, one hundred eighty-two".