161194532 has 12 divisors (see below), whose sum is σ = 282204300. Its totient is φ = 80564736.

The previous prime is 161194531. The next prime is 161194543. The reversal of 161194532 is 235491161.

It can be written as a sum of positive squares in 2 ways, for example, as 38738176 + 122456356 = 6224^2 + 11066^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161194531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5588 + ... + 18804.

It is an arithmetic number, because the mean of its divisors is an integer number (23517025).

Almost surely, 2^161194532 is an apocalyptic number.

It is an amenable number.

161194532 is a deficient number, since it is larger than the sum of its proper divisors (121009768).

161194532 is a wasteful number, since it uses less digits than its factorization.

161194532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16270 (or 16268 counting only the distinct ones).

The product of its digits is 6480, while the sum is 32.

The square root of 161194532 is about 12696.2408609793. The cubic root of 161194532 is about 544.2311994846.

The spelling of 161194532 in words is "one hundred sixty-one million, one hundred ninety-four thousand, five hundred thirty-two".