91475091437 has 8 divisors (see below), whose sum is σ = 92282114400. Its totient is φ = 90670196304.

The previous prime is 91475091419. The next prime is 91475091451. The reversal of 91475091437 is 73419057419.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 91475091437 - 2³⁰ = 90401349613 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 (91475091457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 445538 + ... + 617619.

It is an arithmetic number, because the mean of its divisors is an integer number (11535264300).

Almost surely, 2^91475091437 is an apocalyptic number.

It is an amenable number.

91475091437 is a deficient number, since it is larger than the sum of its proper divisors (807022963).

91475091437 is a wasteful number, since it uses less digits than its factorization.

91475091437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063915.

The product of its (nonzero) digits is 952560, while the sum is 50.

The spelling of 91475091437 in words is "ninety-one billion, four hundred seventy-five million, ninety-one thousand, four hundred thirty-seven".