91298370437 has 4 divisors (see below), whose sum is σ = 91325171136. Its totient is φ = 91271569740.

The previous prime is 91298370407. The next prime is 91298370479. The reversal of 91298370437 is 73407389219.

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 91298370437 - 2⁸ = 91298370181 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 (91298370407) 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 in 3 ways as a sum of consecutive naturals, for example, 13395239 + ... + 13402052.

It is an arithmetic number, because the mean of its divisors is an integer number (22831292784).

Almost surely, 2^91298370437 is an apocalyptic number.

It is an amenable number.

91298370437 is a deficient number, since it is larger than the sum of its proper divisors (26800699).

91298370437 is a wasteful number, since it uses less digits than its factorization.

91298370437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26800698.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 91298370437 in words is "ninety-one billion, two hundred ninety-eight million, three hundred seventy thousand, four hundred thirty-seven".