91850011 has 12 divisors (see below), whose sum is σ = 101600296. Its totient is φ = 82969920.

The previous prime is 91849981. The next prime is 91850023. The reversal of 91850011 is 11005819.

It is not a de Polignac number, because 91850011 - 2²³ = 83461403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91850071) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17395 + ... + 22051.

Almost surely, 2^91850011 is an apocalyptic number.

91850011 is a deficient number, since it is larger than the sum of its proper divisors (9750285).

91850011 is a wasteful number, since it uses less digits than its factorization.

91850011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 25.

The square root of 91850011 is about 9583.8411401692. The cubic root of 91850011 is about 451.1902825853.

The spelling of 91850011 in words is "ninety-one million, eight hundred fifty thousand, eleven".