161194734 has 12 divisors (see below), whose sum is σ = 349255296. Its totient is φ = 53731572.

The previous prime is 161194729. The next prime is 161194771. The reversal of 161194734 is 437491161.

161194734 is a `hidden beast` number, since 1 + 611 + 9 + 4 + 7 + 34 = 666.

161194734 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4477614 + ... + 4477649.

It is an arithmetic number, because the mean of its divisors is an integer number (29104608).

Almost surely, 2^161194734 is an apocalyptic number.

161194734 is an abundant number, since it is smaller than the sum of its proper divisors (188060562).

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

161194734 is a wasteful number, since it uses less digits than its factorization.

161194734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8955271 (or 8955268 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 161194734 is about 12696.2488160874. The cubic root of 161194734 is about 544.2314268179.

The spelling of 161194734 in words is "one hundred sixty-one million, one hundred ninety-four thousand, seven hundred thirty-four".