18394199 has 8 divisors (see below), whose sum is σ = 18975600. Its totient is φ = 17819200.

The previous prime is 18394193. The next prime is 18394213. The reversal of 18394199 is 99149381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18394199 - 2¹² = 18390103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18394193) 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, 4604 + ... + 7614.

It is an arithmetic number, because the mean of its divisors is an integer number (2371950).

Almost surely, 2^18394199 is an apocalyptic number.

18394199 is a deficient number, since it is larger than the sum of its proper divisors (581401).

18394199 is a wasteful number, since it uses less digits than its factorization.

18394199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201.

The product of its digits is 69984, while the sum is 44.

The square root of 18394199 is about 4288.8458820527. The cubic root of 18394199 is about 263.9734774013.

The spelling of 18394199 in words is "eighteen million, three hundred ninety-four thousand, one hundred ninety-nine".