2115389687 has 8 divisors (see below), whose sum is σ = 2234411520. Its totient is φ = 1999541880.

The previous prime is 2115389663. The next prime is 2115389699. The reversal of 2115389687 is 7869835112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2115389687 - 2⁶ = 2115389623 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 (2115389657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 792137 + ... + 794802.

It is an arithmetic number, because the mean of its divisors is an integer number (279301440).

Almost surely, 2^2115389687 is an apocalyptic number.

2115389687 is a deficient number, since it is larger than the sum of its proper divisors (119021833).

2115389687 is a wasteful number, since it uses less digits than its factorization.

2115389687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1587013.

The product of its digits is 725760, while the sum is 50.

The square root of 2115389687 is about 45993.3656846289. The cubic root of 2115389687 is about 1283.6997626750.

The spelling of 2115389687 in words is "two billion, one hundred fifteen million, three hundred eighty-nine thousand, six hundred eighty-seven".