91118146 has 12 divisors (see below), whose sum is σ = 158992038. Its totient is φ = 39050592.

The previous prime is 91118123. The next prime is 91118171. The reversal of 91118146 is 64181119.

It can be written as a sum of positive squares in only one way, i.e., 73770921 + 17347225 = 8589^2 + 4165^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 464791 + ... + 464986.

Almost surely, 2^91118146 is an apocalyptic number.

91118146 is a deficient number, since it is larger than the sum of its proper divisors (67873892).

91118146 is a wasteful number, since it uses less digits than its factorization.

91118146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929793 (or 929786 counting only the distinct ones).

The product of its digits is 1728, while the sum is 31.

The square root of 91118146 is about 9545.5825385358. The cubic root of 91118146 is about 449.9887174126.

The spelling of 91118146 in words is "ninety-one million, one hundred eighteen thousand, one hundred forty-six".