91730323469 has 2 divisors, whose sum is σ = 91730323470. Its totient is φ = 91730323468.

The previous prime is 91730323457. The next prime is 91730323471. The reversal of 91730323469 is 96432303719.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64725974569 + 27004348900 = 254413^2 + 164330^2 .

It is an emirp because it is prime and its reverse (96432303719) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91730323469 is a prime.

It is a super-2 number, since 2×91730323469² (a number of 23 digits) contains 22 as substring.

Together with 91730323471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91730323169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45865161734 + 45865161735.

It is an arithmetic number, because the mean of its divisors is an integer number (45865161735).

Almost surely, 2^91730323469 is an apocalyptic number.

It is an amenable number.

91730323469 is a deficient number, since it is larger than the sum of its proper divisors (1).

91730323469 is an equidigital number, since it uses as much as digits as its factorization.

91730323469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 47.

The spelling of 91730323469 in words is "ninety-one billion, seven hundred thirty million, three hundred twenty-three thousand, four hundred sixty-nine".