91118105 has 8 divisors (see below), whose sum is σ = 117752712. Its totient is φ = 67287168.

The previous prime is 91118099. The next prime is 91118117. The reversal of 91118105 is 50181119.

It can be written as a sum of positive squares in 4 ways, for example, as 17106496 + 74011609 = 4136^2 + 8603^2 .

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

It is not a de Polignac number, because 91118105 - 2⁸ = 91117849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 700844 + ... + 700973.

It is an arithmetic number, because the mean of its divisors is an integer number (14719089).

Almost surely, 2^91118105 is an apocalyptic number.

It is an amenable number.

91118105 is a deficient number, since it is larger than the sum of its proper divisors (26634607).

91118105 is a wasteful number, since it uses less digits than its factorization.

91118105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401835.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 91118105 is about 9545.5803909453. The cubic root of 91118105 is about 449.9886499195.

The spelling of 91118105 in words is "ninety-one million, one hundred eighteen thousand, one hundred five".