91582208349 has 4 divisors (see below), whose sum is σ = 122109611136. Its totient is φ = 61054805564.

The previous prime is 91582208339. The next prime is 91582208363. The reversal of 91582208349 is 94380228519.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 91582208349 - 2¹² = 91582204253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91582208329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15263701389 + ... + 15263701394.

It is an arithmetic number, because the mean of its divisors is an integer number (30527402784).

Almost surely, 2^91582208349 is an apocalyptic number.

It is an amenable number.

91582208349 is a deficient number, since it is larger than the sum of its proper divisors (30527402787).

91582208349 is a wasteful number, since it uses less digits than its factorization.

91582208349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30527402786.

The product of its (nonzero) digits is 1244160, while the sum is 51.

The spelling of 91582208349 in words is "ninety-one billion, five hundred eighty-two million, two hundred eight thousand, three hundred forty-nine".