8378636788 has 24 divisors (see below), whose sum is σ = 15303939840. Its totient is φ = 4006173600.

The previous prime is 8378636771. The next prime is 8378636797. The reversal of 8378636788 is 8876368738.

It is a congruent number.

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, 468613 + ... + 486163.

It is an arithmetic number, because the mean of its divisors is an integer number (637664160).

Almost surely, 2^8378636788 is an apocalyptic number.

It is an amenable number.

8378636788 is a deficient number, since it is larger than the sum of its proper divisors (6925303052).

8378636788 is a wasteful number, since it uses less digits than its factorization.

8378636788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22767 (or 22765 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 64.

The square root of 8378636788 is about 91534.8938274361. The cubic root of 8378636788 is about 2031.0679577222.

The spelling of 8378636788 in words is "eight billion, three hundred seventy-eight million, six hundred thirty-six thousand, seven hundred eighty-eight".