91145385 has 16 divisors (see below), whose sum is σ = 162036480. Its totient is φ = 48610800.

The previous prime is 91145359. The next prime is 91145401. The reversal of 91145385 is 58354119.

91145385 is a `hidden beast` number, since 9 + 114 + 538 + 5 = 666.

It is not a de Polignac number, because 91145385 - 2⁶ = 91145321 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337441 + ... + 337710.

It is an arithmetic number, because the mean of its divisors is an integer number (10127280).

Almost surely, 2^91145385 is an apocalyptic number.

It is an amenable number.

91145385 is a deficient number, since it is larger than the sum of its proper divisors (70891095).

91145385 is a wasteful number, since it uses less digits than its factorization.

91145385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675165 (or 675159 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 91145385 is about 9547.0092175508. The cubic root of 91145385 is about 450.0335530537.

The spelling of 91145385 in words is "ninety-one million, one hundred forty-five thousand, three hundred eighty-five".