18082158 has 16 divisors (see below), whose sum is σ = 36538320. Its totient is φ = 5965056.

The previous prime is 18082157. The next prime is 18082177. The reversal of 18082158 is 85128081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18082151) 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, 14953 + ... + 16116.

It is an arithmetic number, because the mean of its divisors is an integer number (2283645).

Almost surely, 2^18082158 is an apocalyptic number.

18082158 is an abundant number, since it is smaller than the sum of its proper divisors (18456162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18082158 is a wasteful number, since it uses less digits than its factorization.

18082158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31171.

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 18082158 is about 4252.3120769765. The cubic root of 18082158 is about 262.4722655505.

The spelling of 18082158 in words is "eighteen million, eighty-two thousand, one hundred fifty-eight".