91118375 has 8 divisors (see below), whose sum is σ = 113715888. Its totient is φ = 72894600.

The previous prime is 91118371. The next prime is 91118389. The reversal of 91118375 is 57381119.

It is not a de Polignac number, because 91118375 - 2² = 91118371 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 (91118371) 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, 364349 + ... + 364598.

It is an arithmetic number, because the mean of its divisors is an integer number (14214486).

Almost surely, 2^91118375 is an apocalyptic number.

91118375 is a deficient number, since it is larger than the sum of its proper divisors (22597513).

91118375 is an equidigital number, since it uses as much as digits as its factorization.

91118375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728962 (or 728952 counting only the distinct ones).

The product of its digits is 7560, while the sum is 35.

The square root of 91118375 is about 9545.5945336055. The cubic root of 91118375 is about 449.9890943859.

The spelling of 91118375 in words is "ninety-one million, one hundred eighteen thousand, three hundred seventy-five".