18842199 has 8 divisors (see below), whose sum is σ = 25989360. Its totient is φ = 12128256.

The previous prime is 18842191. The next prime is 18842231. The reversal of 18842199 is 99124881.

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

It is not a de Polignac number, because 18842199 - 2³ = 18842191 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 18842199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18842191) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 108202 + ... + 108375.

It is an arithmetic number, because the mean of its divisors is an integer number (3248670).

Almost surely, 2^18842199 is an apocalyptic number.

18842199 is a deficient number, since it is larger than the sum of its proper divisors (7147161).

18842199 is a wasteful number, since it uses less digits than its factorization.

18842199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216609.

The product of its digits is 41472, while the sum is 42.

The square root of 18842199 is about 4340.7601868797. The cubic root of 18842199 is about 266.0993796414.

The spelling of 18842199 in words is "eighteen million, eight hundred forty-two thousand, one hundred ninety-nine".