91532932749 has 6 divisors (see below), whose sum is σ = 132214236206. Its totient is φ = 61021955160.

The previous prime is 91532932717. The next prime is 91532932759. The reversal of 91532932749 is 94723923519.

91532932749 is a `hidden beast` number, since 9 + 1 + 532 + 9 + 32 + 74 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 72463256100 + 19069676649 = 269190^2 + 138093^2 .

It is not a de Polignac number, because 91532932749 - 2⁵ = 91532932717 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 91532932695 and 91532932704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91532932709) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5085162922 + ... + 5085162939.

Almost surely, 2^91532932749 is an apocalyptic number.

It is an amenable number.

91532932749 is a deficient number, since it is larger than the sum of its proper divisors (40681303457).

91532932749 is a wasteful number, since it uses less digits than its factorization.

91532932749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10170325867 (or 10170325864 counting only the distinct ones).

The product of its digits is 3674160, while the sum is 54.

The spelling of 91532932749 in words is "ninety-one billion, five hundred thirty-two million, nine hundred thirty-two thousand, seven hundred forty-nine".