191009811132 has 72 divisors (see below), whose sum is σ = 552309934176. Its totient is φ = 54524404224.

The previous prime is 191009811073. The next prime is 191009811163. The reversal of 191009811132 is 231118900191.

191009811132 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×191009811132² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 69033 + ... + 621920.

It is an arithmetic number, because the mean of its divisors is an integer number (7670971308).

Almost surely, 2^191009811132 is an apocalyptic number.

191009811132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

191009811132 is an abundant number, since it is smaller than the sum of its proper divisors (361300123044).

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

191009811132 is a wasteful number, since it uses less digits than its factorization.

191009811132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 692067 (or 692062 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The spelling of 191009811132 in words is "one hundred ninety-one billion, nine million, eight hundred eleven thousand, one hundred thirty-two".