19080239 has 4 divisors (see below), whose sum is σ = 20202624. Its totient is φ = 17957856.

The previous prime is 19080233. The next prime is 19080247. The reversal of 19080239 is 93208091.

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

It is a cyclic number.

It is not a de Polignac number, because 19080239 - 2¹² = 19076143 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 (19080233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561167 + ... + 561200.

It is an arithmetic number, because the mean of its divisors is an integer number (5050656).

Almost surely, 2^19080239 is an apocalyptic number.

19080239 is a deficient number, since it is larger than the sum of its proper divisors (1122385).

19080239 is a wasteful number, since it uses less digits than its factorization.

19080239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1122384.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 19080239 is about 4368.0932911283. The cubic root of 19080239 is about 267.2152687006.

The spelling of 19080239 in words is "nineteen million, eighty thousand, two hundred thirty-nine".