91174113 has 8 divisors (see below), whose sum is σ = 135072800. Its totient is φ = 60782724.

The previous prime is 91174087. The next prime is 91174123. The reversal of 91174113 is 31147119.

It is not a de Polignac number, because 91174113 - 2⁵ = 91174081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3376819 = 91174113 / (9 + 1 + 1 + 7 + 4 + 1 + 1 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91174123) 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, 1688383 + ... + 1688436.

It is an arithmetic number, because the mean of its divisors is an integer number (16884100).

Almost surely, 2^91174113 is an apocalyptic number.

It is an amenable number.

91174113 is a deficient number, since it is larger than the sum of its proper divisors (43898687).

91174113 is a wasteful number, since it uses less digits than its factorization.

91174113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3376828 (or 3376822 counting only the distinct ones).

The product of its digits is 756, while the sum is 27.

The square root of 91174113 is about 9548.5136539673. The cubic root of 91174113 is about 450.0808299247.

The spelling of 91174113 in words is "ninety-one million, one hundred seventy-four thousand, one hundred thirteen".