18119439 has 24 divisors (see below), whose sum is σ = 28343952. Its totient is φ = 11088000.

The previous prime is 18119411. The next prime is 18119441. The reversal of 18119439 is 93491181.

It is not a de Polignac number, because 18119439 - 2⁸ = 18119183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119489) 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 23 ways as a sum of consecutive naturals, for example, 29059 + ... + 29675.

It is an arithmetic number, because the mean of its divisors is an integer number (1180998).

Almost surely, 2^18119439 is an apocalyptic number.

18119439 is a deficient number, since it is larger than the sum of its proper divisors (10224513).

18119439 is a wasteful number, since it uses less digits than its factorization.

18119439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887 (or 884 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 18119439 is about 4256.6934350503. The cubic root of 18119439 is about 262.6525263230.

The spelling of 18119439 in words is "eighteen million, one hundred nineteen thousand, four hundred thirty-nine".