2115322609 has 4 divisors (see below), whose sum is σ = 2129331520. Its totient is φ = 2101313700.

The previous prime is 2115322579. The next prime is 2115322619. The reversal of 2115322609 is 9062235112.

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 2115322609 - 2⁵ = 2115322577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2115322619) 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, 7004229 + ... + 7004530.

It is an arithmetic number, because the mean of its divisors is an integer number (532332880).

Almost surely, 2^2115322609 is an apocalyptic number.

It is an amenable number.

2115322609 is a deficient number, since it is larger than the sum of its proper divisors (14008911).

2115322609 is a wasteful number, since it uses less digits than its factorization.

2115322609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14008910.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 2115322609 is about 45992.6364649821. The cubic root of 2115322609 is about 1283.6861940288.

The spelling of 2115322609 in words is "two billion, one hundred fifteen million, three hundred twenty-two thousand, six hundred nine".