9091691161 has 8 divisors (see below), whose sum is σ = 10545586880. Its totient is φ = 7676566128.

The previous prime is 9091691153. The next prime is 9091691201. The reversal of 9091691161 is 1611961909.

It is a happy number.

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

It is not a de Polignac number, because 9091691161 - 2³ = 9091691153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9091691131) 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, 9692166 + ... + 9693103.

It is an arithmetic number, because the mean of its divisors is an integer number (1318198360).

Almost surely, 2^9091691161 is an apocalyptic number.

It is an amenable number.

9091691161 is a deficient number, since it is larger than the sum of its proper divisors (1453895719).

9091691161 is a wasteful number, since it uses less digits than its factorization.

9091691161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19385343.

The product of its (nonzero) digits is 26244, while the sum is 43.

The square root of 9091691161 is about 95350.3600465148. The cubic root of 9091691161 is about 2087.1238691533.

The spelling of 9091691161 in words is "nine billion, ninety-one million, six hundred ninety-one thousand, one hundred sixty-one".