2915638789 has 4 divisors (see below), whose sum is σ = 3332158624. Its totient is φ = 2499118956.

The previous prime is 2915638751. The next prime is 2915638793. The reversal of 2915638789 is 9878365192.

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 2915638789 - 2²⁵ = 2882084357 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 (2915638189) 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, 208259907 + ... + 208259920.

It is an arithmetic number, because the mean of its divisors is an integer number (833039656).

Almost surely, 2^2915638789 is an apocalyptic number.

It is an amenable number.

2915638789 is a deficient number, since it is larger than the sum of its proper divisors (416519835).

2915638789 is an equidigital number, since it uses as much as digits as its factorization.

2915638789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416519834.

The product of its digits is 6531840, while the sum is 58.

The square root of 2915638789 is about 53996.6553501233. The cubic root of 2915638789 is about 1428.6019539320.

The spelling of 2915638789 in words is "two billion, nine hundred fifteen million, six hundred thirty-eight thousand, seven hundred eighty-nine".