18844199 has 16 divisors (see below), whose sum is σ = 21613824. Its totient is φ = 16262400.

The previous prime is 18844183. The next prime is 18844201. The reversal of 18844199 is 99144881.

It is not a de Polignac number, because 18844199 - 2⁴ = 18844183 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 (18844129) 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 15 ways as a sum of consecutive naturals, for example, 53207 + ... + 53559.

It is an arithmetic number, because the mean of its divisors is an integer number (1350864).

Almost surely, 2^18844199 is an apocalyptic number.

18844199 is a deficient number, since it is larger than the sum of its proper divisors (2769625).

18844199 is a wasteful number, since it uses less digits than its factorization.

18844199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598.

The product of its digits is 82944, while the sum is 44.

The square root of 18844199 is about 4340.9905551613. The cubic root of 18844199 is about 266.1087943233.

The spelling of 18844199 in words is "eighteen million, eight hundred forty-four thousand, one hundred ninety-nine".