19080013 has 4 divisors (see below), whose sum is σ = 19100988. Its totient is φ = 19059040.

The previous prime is 19079993. The next prime is 19080077. The reversal of 19080013 is 31008091.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3697929 + 15382084 = 1923^2 + 3922^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19080013 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19080713) 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, 9058 + ... + 10963.

It is an arithmetic number, because the mean of its divisors is an integer number (4775247).

Almost surely, 2^19080013 is an apocalyptic number.

It is an amenable number.

19080013 is a deficient number, since it is larger than the sum of its proper divisors (20975).

19080013 is an equidigital number, since it uses as much as digits as its factorization.

19080013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20974.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 19080013 is about 4368.0674216408. The cubic root of 19080013 is about 267.2142136668.

The spelling of 19080013 in words is "nineteen million, eighty thousand, thirteen".