18328198 has 16 divisors (see below), whose sum is σ = 33073920. Its totient is φ = 7441416.

The previous prime is 18328187. The next prime is 18328199. The reversal of 18328198 is 89182381.

It is a self number, because there is not a number n which added to its sum of digits gives 18328198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18328199) 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, 34186 + ... + 34717.

It is an arithmetic number, because the mean of its divisors is an integer number (2067120).

Almost surely, 2^18328198 is an apocalyptic number.

18328198 is a deficient number, since it is larger than the sum of its proper divisors (14745722).

18328198 is a wasteful number, since it uses less digits than its factorization.

18328198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68931.

The product of its digits is 27648, while the sum is 40.

The square root of 18328198 is about 4281.1444731520. The cubic root of 18328198 is about 263.6573742416.

The spelling of 18328198 in words is "eighteen million, three hundred twenty-eight thousand, one hundred ninety-eight".