9191161 has 8 divisors (see below), whose sum is σ = 10525184. Its totient is φ = 7862400.

The previous prime is 9191153. The next prime is 9191167. The reversal of 9191161 is 1611919.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 9191161 - 2³ = 9191153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9191167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3736 + ... + 5686.

It is an arithmetic number, because the mean of its divisors is an integer number (1315648).

Almost surely, 2^9191161 is an apocalyptic number.

It is an amenable number.

9191161 is a deficient number, since it is larger than the sum of its proper divisors (1334023).

9191161 is a wasteful number, since it uses less digits than its factorization.

9191161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631.

The product of its digits is 486, while the sum is 28.

The square root of 9191161 is about 3031.6927614783. The cubic root of 9191161 is about 209.4707838571.

It can be divided in two parts, 919 and 1161, that added together give a triangular number (2080 = T₆₄).

The spelling of 9191161 in words is "nine million, one hundred ninety-one thousand, one hundred sixty-one".