91337981118 has 8 divisors (see below), whose sum is σ = 182675962248. Its totient is φ = 30445993704.

The previous prime is 91337981113. The next prime is 91337981131. The reversal of 91337981118 is 81118973319.

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

91337981118 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91337981113) 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, 7611498421 + ... + 7611498432.

It is an arithmetic number, because the mean of its divisors is an integer number (22834495281).

Almost surely, 2^91337981118 is an apocalyptic number.

91337981118 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91337981118 is a wasteful number, since it uses less digits than its factorization.

91337981118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15222996858.

The product of its digits is 326592, while the sum is 51.

The spelling of 91337981118 in words is "ninety-one billion, three hundred thirty-seven million, nine hundred eighty-one thousand, one hundred eighteen".