161194722 has 16 divisors (see below), whose sum is σ = 347188800. Its totient is φ = 49598352.

The previous prime is 161194679. The next prime is 161194723. The reversal of 161194722 is 227491161.

It is a happy number.

161194722 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161194723) 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, 1033222 + ... + 1033377.

It is an arithmetic number, because the mean of its divisors is an integer number (21699300).

Almost surely, 2^161194722 is an apocalyptic number.

161194722 is an abundant number, since it is smaller than the sum of its proper divisors (185994078).

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

161194722 is a wasteful number, since it uses less digits than its factorization.

161194722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2066617.

The product of its digits is 6048, while the sum is 33.

The square root of 161194722 is about 12696.2483435068. The cubic root of 161194722 is about 544.2314133130.

The spelling of 161194722 in words is "one hundred sixty-one million, one hundred ninety-four thousand, seven hundred twenty-two".