9691010091 has 24 divisors (see below), whose sum is σ = 16299709920. Its totient is φ = 5433232896.

The previous prime is 9691010081. The next prime is 9691010093. The reversal of 9691010091 is 1900101969.

It is not a de Polignac number, because 9691010091 - 2¹⁵ = 9690977323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9691010093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1447846 + ... + 1454523.

It is an arithmetic number, because the mean of its divisors is an integer number (679154580).

Almost surely, 2^9691010091 is an apocalyptic number.

9691010091 is a deficient number, since it is larger than the sum of its proper divisors (6608699829).

9691010091 is a wasteful number, since it uses less digits than its factorization.

9691010091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2902435 (or 2902432 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 36.

The square root of 9691010091 is about 98442.9280903408. The cubic root of 9691010091 is about 2132.0121823656.

The spelling of 9691010091 in words is "nine billion, six hundred ninety-one million, ten thousand, ninety-one".