191889252996 has 72 divisors (see below), whose sum is σ = 520901267040. Its totient is φ = 54819289728.

The previous prime is 191889252983. The next prime is 191889253007. The reversal of 191889252996 is 699252988191.

191889252996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 191889252996.

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 23 ways as a sum of consecutive naturals, for example, 8551840 + ... + 8574248.

It is an arithmetic number, because the mean of its divisors is an integer number (7234739820).

Almost surely, 2^191889252996 is an apocalyptic number.

It is an amenable number.

191889252996 is an abundant number, since it is smaller than the sum of its proper divisors (329012014044).

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

191889252996 is a wasteful number, since it uses less digits than its factorization.

191889252996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36993 (or 36984 counting only the distinct ones).

The product of its digits is 50388480, while the sum is 69.

The spelling of 191889252996 in words is "one hundred ninety-one billion, eight hundred eighty-nine million, two hundred fifty-two thousand, nine hundred ninety-six".