8129995804 has 36 divisors (see below), whose sum is σ = 17160843504. Its totient is φ = 3300896448.

The previous prime is 8129995787. The next prime is 8129995837. The reversal of 8129995804 is 4085999218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392049 + ... + 412264.

Almost surely, 2^8129995804 is an apocalyptic number.

It is an amenable number.

8129995804 is an abundant number, since it is smaller than the sum of its proper divisors (9030847700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8129995804 is a wasteful number, since it uses less digits than its factorization.

8129995804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804362 (or 804341 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 55.

The square root of 8129995804 is about 90166.4893627339. The cubic root of 8129995804 is about 2010.7748309321.

The spelling of 8129995804 in words is "eight billion, one hundred twenty-nine million, nine hundred ninety-five thousand, eight hundred four".