8188188164 has 24 divisors (see below), whose sum is σ = 15963711960. Its totient is φ = 3648847104.

The previous prime is 8188188157. The next prime is 8188188181. The reversal of 8188188164 is 4618818818.

It can be written as a sum of positive squares in 4 ways, for example, as 1620706564 + 6567481600 = 40258^2 + 81040^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

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, 2713409 + ... + 2716424.

It is an arithmetic number, because the mean of its divisors is an integer number (665154665).

Almost surely, 2^8188188164 is an apocalyptic number.

It is an amenable number.

8188188164 is a deficient number, since it is larger than the sum of its proper divisors (7775523796).

8188188164 is a wasteful number, since it uses less digits than its factorization.

8188188164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5429879 (or 5429877 counting only the distinct ones).

The product of its digits is 786432, while the sum is 53.

The square root of 8188188164 is about 90488.6079238707. The cubic root of 8188188164 is about 2015.5609612438.

The spelling of 8188188164 in words is "eight billion, one hundred eighty-eight million, one hundred eighty-eight thousand, one hundred sixty-four".