8778190864 has 45 divisors (see below), whose sum is σ = 17344586397. Its totient is φ = 4303835712.

The previous prime is 8778190859. The next prime is 8778190867. The reversal of 8778190864 is 4680918778.

The square root of 8778190864 is 93692.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 5882890000 + 2895300864 = 76700^2 + 53808^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8778190799 and 8778190808.

It is not an unprimeable number, because it can be changed into a prime (8778190867) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 22111114 + ... + 22111510.

Almost surely, 2^8778190864 is an apocalyptic number.

8778190864 is the 93692-nd square number.

It is an amenable number.

8778190864 is a deficient number, since it is larger than the sum of its proper divisors (8566395533).

8778190864 is an frugal number, since it uses more digits than its factorization.

8778190864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920 (or 458 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 58.

The cubic root of 8778190864 is about 2062.8532793020.

The spelling of 8778190864 in words is "eight billion, seven hundred seventy-eight million, one hundred ninety thousand, eight hundred sixty-four".