2109388613 has 4 divisors (see below), whose sum is σ = 2111833728. Its totient is φ = 2106943500.

The previous prime is 2109388571. The next prime is 2109388639. The reversal of 2109388613 is 3168839012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2109388613 - 2⁶ = 2109388549 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 (2109388313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1221263 + ... + 1222988.

It is an arithmetic number, because the mean of its divisors is an integer number (527958432).

Almost surely, 2^2109388613 is an apocalyptic number.

It is an amenable number.

2109388613 is a deficient number, since it is larger than the sum of its proper divisors (2445115).

2109388613 is an equidigital number, since it uses as much as digits as its factorization.

2109388613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445114.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 2109388613 is about 45928.0808765182. The cubic root of 2109388613 is about 1282.4847188641.

The spelling of 2109388613 in words is "two billion, one hundred nine million, three hundred eighty-eight thousand, six hundred thirteen".