18198324 has 48 divisors (see below), whose sum is σ = 47510400. Its totient is φ = 6023808.

The previous prime is 18198319. The next prime is 18198343. The reversal of 18198324 is 42389181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17532 + ... + 18540.

It is an arithmetic number, because the mean of its divisors is an integer number (989800).

Almost surely, 2^18198324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18198324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23755200).

18198324 is an abundant number, since it is smaller than the sum of its proper divisors (29312076).

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

18198324 is a wasteful number, since it uses less digits than its factorization.

18198324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189 (or 1181 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 18198324 is about 4265.9493667881. The cubic root of 18198324 is about 263.0331368754.

The spelling of 18198324 in words is "eighteen million, one hundred ninety-eight thousand, three hundred twenty-four".