3109779013 has 16 divisors (see below), whose sum is σ = 3443398272. Its totient is φ = 2808168000.

The previous prime is 3109779007. The next prime is 3109779019.

It is a happy number.

3109779013 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (3109779007) and next prime (3109779019).

It is a de Polignac number, because none of the positive numbers 2^k-3109779013 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 (3109779019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193245 + ... + 208717.

It is an arithmetic number, because the mean of its divisors is an integer number (215212392).

Almost surely, 2^3109779013 is an apocalyptic number.

It is an amenable number.

3109779013 is a deficient number, since it is larger than the sum of its proper divisors (333619259).

3109779013 is a wasteful number, since it uses less digits than its factorization.

3109779013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15657 (or 15635 counting only the distinct ones).

The product of its (nonzero) digits is 35721, while the sum is 40.

The square root of 3109779013 is about 55765.3926104712. The cubic root of 3109779013 is about 1459.6313282238.

The spelling of 3109779013 in words is "three billion, one hundred nine million, seven hundred seventy-nine thousand, thirteen".