91118136 has 16 divisors (see below), whose sum is σ = 227795400. Its totient is φ = 30372704.

The previous prime is 91118123. The next prime is 91118171. The reversal of 91118136 is 63181119.

It is a super-2 number, since 2×91118136² = 16605029416228992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1898271 + ... + 1898318.

Almost surely, 2^91118136 is an apocalyptic number.

It is an amenable number.

91118136 is an abundant number, since it is smaller than the sum of its proper divisors (136677264).

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

91118136 is a wasteful number, since it uses less digits than its factorization.

91118136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3796598 (or 3796594 counting only the distinct ones).

The product of its digits is 1296, while the sum is 30.

The square root of 91118136 is about 9545.5820147333. The cubic root of 91118136 is about 449.9887009509.

The spelling of 91118136 in words is "ninety-one million, one hundred eighteen thousand, one hundred thirty-six".