18839119 has 4 divisors (see below), whose sum is σ = 20288296. Its totient is φ = 17389944.

The previous prime is 18839101. The next prime is 18839123. The reversal of 18839119 is 91193881.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-18839119 is a prime.

It is a super-2 number, since 2×18839119² = 709824809392322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18839129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724569 + ... + 724594.

It is an arithmetic number, because the mean of its divisors is an integer number (5072074).

Almost surely, 2^18839119 is an apocalyptic number.

18839119 is a deficient number, since it is larger than the sum of its proper divisors (1449177).

18839119 is a wasteful number, since it uses less digits than its factorization.

18839119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449176.

The product of its digits is 15552, while the sum is 40.

The square root of 18839119 is about 4340.4053958127. The cubic root of 18839119 is about 266.0848797282.

The spelling of 18839119 in words is "eighteen million, eight hundred thirty-nine thousand, one hundred nineteen".