161323922 has 16 divisors (see below), whose sum is σ = 249302040. Its totient is φ = 78236928.

The previous prime is 161323919. The next prime is 161323949. The reversal of 161323922 is 229323161.

It can be written as a sum of positive squares in 4 ways, for example, as 115369081 + 45954841 = 10741^2 + 6779^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21704 + ... + 28172.

Almost surely, 2^161323922 is an apocalyptic number.

161323922 is a deficient number, since it is larger than the sum of its proper divisors (87978118).

161323922 is a wasteful number, since it uses less digits than its factorization.

161323922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6845.

The product of its digits is 3888, while the sum is 29.

The square root of 161323922 is about 12701.3354415983. The cubic root of 161323922 is about 544.3767777103.

The spelling of 161323922 in words is "one hundred sixty-one million, three hundred twenty-three thousand, nine hundred twenty-two".