191385828894 has 24 divisors (see below), whose sum is σ = 414480554712. Its totient is φ = 58887947040.

The previous prime is 191385828871. The next prime is 191385828899. The reversal of 191385828894 is 498828583191.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191385828899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94370697 + ... + 94372724.

It is an arithmetic number, because the mean of its divisors is an integer number (17270023113).

Almost surely, 2^191385828894 is an apocalyptic number.

191385828894 is an abundant number, since it is smaller than the sum of its proper divisors (223094725818).

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

191385828894 is a wasteful number, since it uses less digits than its factorization.

191385828894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188743452 (or 188743439 counting only the distinct ones).

The product of its digits is 39813120, while the sum is 66.

The spelling of 191385828894 in words is "one hundred ninety-one billion, three hundred eighty-five million, eight hundred twenty-eight thousand, eight hundred ninety-four".