191132533 has 12 divisors (see below), whose sum is σ = 208688940. Its totient is φ = 174819456.

The previous prime is 191132527. The next prime is 191132551. The reversal of 191132533 is 335231191.

It can be written as a sum of positive squares in 2 ways, for example, as 78730129 + 112402404 = 8873^2 + 10602^2 .

It is not a de Polignac number, because 191132533 - 2⁹ = 191132021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191132593) 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, 1341 + ... + 19597.

It is an arithmetic number, because the mean of its divisors is an integer number (17390745).

Almost surely, 2^191132533 is an apocalyptic number.

It is an amenable number.

191132533 is a deficient number, since it is larger than the sum of its proper divisors (17556407).

191132533 is a wasteful number, since it uses less digits than its factorization.

191132533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18324 (or 18305 counting only the distinct ones).

The product of its digits is 2430, while the sum is 28.

The square root of 191132533 is about 13825.0690052527. The cubic root of 191132533 is about 576.0296942077.

The spelling of 191132533 in words is "one hundred ninety-one million, one hundred thirty-two thousand, five hundred thirty-three".