8115438634 has 16 divisors (see below), whose sum is σ = 12773401920. Its totient is φ = 3859609600.

The previous prime is 8115438589. The next prime is 8115438641. The reversal of 8115438634 is 4368345118.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484567 + ... + 501034.

It is an arithmetic number, because the mean of its divisors is an integer number (798337620).

Almost surely, 2^8115438634 is an apocalyptic number.

8115438634 is a deficient number, since it is larger than the sum of its proper divisors (4657963286).

8115438634 is a wasteful number, since it uses less digits than its factorization.

8115438634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985805.

The product of its digits is 276480, while the sum is 43.

The square root of 8115438634 is about 90085.7293582063. The cubic root of 8115438634 is about 2009.5739824664.

The spelling of 8115438634 in words is "eight billion, one hundred fifteen million, four hundred thirty-eight thousand, six hundred thirty-four".