91836317 has 2 divisors, whose sum is σ = 91836318. Its totient is φ = 91836316.

The previous prime is 91836259. The next prime is 91836361. The reversal of 91836317 is 71363819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88717561 + 3118756 = 9419^2 + 1766^2 .

It is an emirp because it is prime and its reverse (71363819) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91836317 - 2¹⁶ = 91770781 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91836517) by changing a digit.

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 as a sum of consecutive naturals, namely, 45918158 + 45918159.

It is an arithmetic number, because the mean of its divisors is an integer number (45918159).

Almost surely, 2^91836317 is an apocalyptic number.

It is an amenable number.

91836317 is a deficient number, since it is larger than the sum of its proper divisors (1).

91836317 is an equidigital number, since it uses as much as digits as its factorization.

91836317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 38.

The square root of 91836317 is about 9583.1266818299. The cubic root of 91836317 is about 451.1678586838.

The spelling of 91836317 in words is "ninety-one million, eight hundred thirty-six thousand, three hundred seventeen".