191385828900 has 108 divisors (see below), whose sum is σ = 685586591872. Its totient is φ = 43745330880.

The previous prime is 191385828899. The next prime is 191385828917. The reversal of 191385828900 is 9828583191.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15183052 + ... + 15195651.

Almost surely, 2^191385828900 is an apocalyptic number.

191385828900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191385828900 is an abundant number, since it is smaller than the sum of its proper divisors (494200762972).

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

191385828900 is a wasteful number, since it uses less digits than its factorization.

191385828900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30378730 (or 30378720 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 54.

The spelling of 191385828900 in words is "one hundred ninety-one billion, three hundred eighty-five million, eight hundred twenty-eight thousand, nine hundred".