18079839 has 6 divisors (see below), whose sum is σ = 26115336. Its totient is φ = 12053220.

The previous prime is 18079829. The next prime is 18079843. The reversal of 18079839 is 93897081.

It is not a de Polignac number, because 18079839 - 2¹¹ = 18077791 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18079794 and 18079803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18079829) 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 5 ways as a sum of consecutive naturals, for example, 1004427 + ... + 1004444.

It is an arithmetic number, because the mean of its divisors is an integer number (4352556).

Almost surely, 2^18079839 is an apocalyptic number.

18079839 is a deficient number, since it is larger than the sum of its proper divisors (8035497).

18079839 is a wasteful number, since it uses less digits than its factorization.

18079839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2008877 (or 2008874 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 45.

The square root of 18079839 is about 4252.0393930442. The cubic root of 18079839 is about 262.4610445594.

The spelling of 18079839 in words is "eighteen million, seventy-nine thousand, eight hundred thirty-nine".