8251186816 has 32 divisors (see below), whose sum is σ = 16716535200. Its totient is φ = 4055664384.

The previous prime is 8251186799. The next prime is 8251186831. The reversal of 8251186816 is 6186811528.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538740 + ... + 553843.

It is an arithmetic number, because the mean of its divisors is an integer number (522391725).

Almost surely, 2^8251186816 is an apocalyptic number.

It is an amenable number.

8251186816 is an abundant number, since it is smaller than the sum of its proper divisors (8465348384).

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

8251186816 is a wasteful number, since it uses less digits than its factorization.

8251186816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092656 (or 1092644 counting only the distinct ones).

The product of its digits is 184320, while the sum is 46.

The square root of 8251186816 is about 90836.0435950400. The cubic root of 8251186816 is about 2020.7168987625.

The spelling of 8251186816 in words is "eight billion, two hundred fifty-one million, one hundred eighty-six thousand, eight hundred sixteen".