161768322 has 48 divisors (see below), whose sum is σ = 371067840. Its totient is φ = 50845536.

The previous prime is 161768309. The next prime is 161768357. The reversal of 161768322 is 223867161.

161768322 is a `hidden beast` number, since 1 + 617 + 6 + 8 + 32 + 2 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18843 + ... + 26049.

It is an arithmetic number, because the mean of its divisors is an integer number (7730580).

Almost surely, 2^161768322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161768322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185533920).

161768322 is an abundant number, since it is smaller than the sum of its proper divisors (209299518).

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

161768322 is a wasteful number, since it uses less digits than its factorization.

161768322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7287 (or 7284 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 161768322 is about 12718.8176337268. The cubic root of 161768322 is about 544.8761854359.

The spelling of 161768322 in words is "one hundred sixty-one million, seven hundred sixty-eight thousand, three hundred twenty-two".