18893199 has 16 divisors (see below), whose sum is σ = 27864032. Its totient is φ = 11311488.

The previous prime is 18893191. The next prime is 18893209. The reversal of 18893199 is 99139881.

It is not a de Polignac number, because 18893199 - 2³ = 18893191 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 (18893191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5104 + ... + 7989.

It is an arithmetic number, because the mean of its divisors is an integer number (1741502).

Almost surely, 2^18893199 is an apocalyptic number.

18893199 is a deficient number, since it is larger than the sum of its proper divisors (8970833).

18893199 is a wasteful number, since it uses less digits than its factorization.

18893199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13146.

The product of its digits is 139968, while the sum is 48.

The square root of 18893199 is about 4346.6307641667. The cubic root of 18893199 is about 266.3392462393.

The spelling of 18893199 in words is "eighteen million, eight hundred ninety-three thousand, one hundred ninety-nine".