191771132 has 12 divisors (see below), whose sum is σ = 383542320. Its totient is φ = 82187616.

The previous prime is 191771077. The next prime is 191771141. The reversal of 191771132 is 231177191.

191771132 is an admirable number.

It is a super-2 number, since 2×191771132² = 73552334137122848, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3424457 + ... + 3424512.

It is an arithmetic number, because the mean of its divisors is an integer number (31961860).

Almost surely, 2^191771132 is an apocalyptic number.

It is an amenable number.

191771132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

191771132 is a wasteful number, since it uses less digits than its factorization.

191771132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6848980 (or 6848978 counting only the distinct ones).

The product of its digits is 2646, while the sum is 32.

The square root of 191771132 is about 13848.1454354004. The cubic root of 191771132 is about 576.6705114441.

The spelling of 191771132 in words is "one hundred ninety-one million, seven hundred seventy-one thousand, one hundred thirty-two".