18080839 has 8 divisors (see below), whose sum is σ = 20711808. Its totient is φ = 15461880.

The previous prime is 18080831. The next prime is 18080861. The reversal of 18080839 is 93808081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18080839 - 2³ = 18080831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18080798 and 18080807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18080831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 504 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (2588976).

Almost surely, 2^18080839 is an apocalyptic number.

18080839 is a deficient number, since it is larger than the sum of its proper divisors (2630969).

18080839 is an equidigital number, since it uses as much as digits as its factorization.

18080839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6005.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 18080839 is about 4252.1569820504. The cubic root of 18080839 is about 262.4658833968.

The spelling of 18080839 in words is "eighteen million, eighty thousand, eight hundred thirty-nine".