91118265 has 16 divisors (see below), whose sum is σ = 166616448. Its totient is φ = 41654016.

The previous prime is 91118263. The next prime is 91118267. The reversal of 91118265 is 56281119.

It is an interprime number because it is at equal distance from previous prime (91118263) and next prime (91118267).

It is not a de Polignac number, because 91118265 - 2¹ = 91118263 is a prime.

It is a super-2 number, since 2×91118265² = 16605076433220450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (91118263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 433792 + ... + 434001.

It is an arithmetic number, because the mean of its divisors is an integer number (10413528).

Almost surely, 2^91118265 is an apocalyptic number.

It is an amenable number.

91118265 is a deficient number, since it is larger than the sum of its proper divisors (75498183).

91118265 is a wasteful number, since it uses less digits than its factorization.

91118265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867808.

The product of its digits is 4320, while the sum is 33.

The square root of 91118265 is about 9545.5887717835. The cubic root of 91118265 is about 449.9889133071.

The spelling of 91118265 in words is "ninety-one million, one hundred eighteen thousand, two hundred sixty-five".