161191596 has 12 divisors (see below), whose sum is σ = 376113752. Its totient is φ = 53730528.

The previous prime is 161191579. The next prime is 161191607. The reversal of 161191596 is 695191161.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6716305 + ... + 6716328.

Almost surely, 2^161191596 is an apocalyptic number.

It is an amenable number.

161191596 is an abundant number, since it is smaller than the sum of its proper divisors (214922156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161191596 is a wasteful number, since it uses less digits than its factorization.

161191596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13432640 (or 13432638 counting only the distinct ones).

The product of its digits is 14580, while the sum is 39.

The square root of 161191596 is about 12696.1252356772. The cubic root of 161191596 is about 544.2278952524.

The spelling of 161191596 in words is "one hundred sixty-one million, one hundred ninety-one thousand, five hundred ninety-six".