161852222 has 32 divisors (see below), whose sum is σ = 297043200. Its totient is φ = 64594368.

The previous prime is 161852221. The next prime is 161852227. The reversal of 161852222 is 222258161.

It is a super-2 number, since 2×161852222² = 52392283532674568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161852221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10538 + ... + 20850.

It is an arithmetic number, because the mean of its divisors is an integer number (9282600).

Almost surely, 2^161852222 is an apocalyptic number.

161852222 is a deficient number, since it is larger than the sum of its proper divisors (135190978).

161852222 is a wasteful number, since it uses less digits than its factorization.

161852222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10400.

The product of its digits is 3840, while the sum is 29.

The square root of 161852222 is about 12722.1154687418. The cubic root of 161852222 is about 544.9703678864.

The spelling of 161852222 in words is "one hundred sixty-one million, eight hundred fifty-two thousand, two hundred twenty-two".