18199344 has 40 divisors (see below), whose sum is σ = 47725120. Its totient is φ = 5974848.

The previous prime is 18199331. The next prime is 18199361. The reversal of 18199344 is 44399181.

It is a super-2 number, since 2×18199344² = 662432244060672, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387 + ... + 6045.

It is an arithmetic number, because the mean of its divisors is an integer number (1193128).

Almost surely, 2^18199344 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 18199344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23862560).

18199344 is an abundant number, since it is smaller than the sum of its proper divisors (29525776).

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

18199344 is a wasteful number, since it uses less digits than its factorization.

18199344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5737 (or 5731 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 18199344 is about 4266.0689164616. The cubic root of 18199344 is about 263.0380510420.

The spelling of 18199344 in words is "eighteen million, one hundred ninety-nine thousand, three hundred forty-four".