191988832068 has 96 divisors (see below), whose sum is σ = 571577664000. Its totient is φ = 55116404640.

The previous prime is 191988832043. The next prime is 191988832093. The reversal of 191988832068 is 860238889191.

It is a happy number.

191988832068 is a `hidden beast` number, since 1 + 91 + 98 + 88 + 320 + 68 = 666.

191988832068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (191988832043) and next prime (191988832093).

It is a junction number, because it is equal to n+sod(n) for n = 191988831996 and 191988832014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4230238 + ... + 4275381.

It is an arithmetic number, because the mean of its divisors is an integer number (5953934000).

Almost surely, 2^191988832068 is an apocalyptic number.

191988832068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

191988832068 is an abundant number, since it is smaller than the sum of its proper divisors (379588831932).

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

191988832068 is a wasteful number, since it uses less digits than its factorization.

191988832068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8505662 (or 8505654 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 63.

The spelling of 191988832068 in words is "one hundred ninety-one billion, nine hundred eighty-eight million, eight hundred thirty-two thousand, sixty-eight".