2104044013 has 4 divisors (see below), whose sum is σ = 2104164828. Its totient is φ = 2103923200.

The previous prime is 2104043987. The next prime is 2104044031. The reversal of 2104044013 is 3104404012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 446984164 + 1657059849 = 21142^2 + 40707^2 .

It is a cyclic number.

It is not a de Polignac number, because 2104044013 - 2²⁵ = 2070489581 is a prime.

It is a super-2 number, since 2×2104044013² = 8854002417282288338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104044413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28756 + ... + 70957.

It is an arithmetic number, because the mean of its divisors is an integer number (526041207).

Almost surely, 2^2104044013 is an apocalyptic number.

It is an amenable number.

2104044013 is a deficient number, since it is larger than the sum of its proper divisors (120815).

2104044013 is an equidigital number, since it uses as much as digits as its factorization.

2104044013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120814.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2104044013 is about 45869.8595267088. The cubic root of 2104044013 is about 1281.4006504023.

Adding to 2104044013 its reverse (3104404012), we get a palindrome (5208448025).

The spelling of 2104044013 in words is "two billion, one hundred four million, forty-four thousand, thirteen".