188893326808 has 8 divisors (see below), whose sum is σ = 354174987780. Its totient is φ = 94446663400.

The previous prime is 188893326803. The next prime is 188893326821. The reversal of 188893326808 is 808623398881.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 188893326808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188893326803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11805832918 + ... + 11805832933.

Almost surely, 2^188893326808 is an apocalyptic number.

It is an amenable number.

188893326808 is a deficient number, since it is larger than the sum of its proper divisors (165281660972).

188893326808 is a wasteful number, since it uses less digits than its factorization.

188893326808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23611665857 (or 23611665853 counting only the distinct ones).

The product of its (nonzero) digits is 31850496, while the sum is 64.

The spelling of 188893326808 in words is "one hundred eighty-eight billion, eight hundred ninety-three million, three hundred twenty-six thousand, eight hundred eight".