161936222 has 8 divisors (see below), whose sum is σ = 277604976. Its totient is φ = 69401232.

The previous prime is 161936209. The next prime is 161936227. The reversal of 161936222 is 222639161.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161936227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5783423 + ... + 5783450.

It is an arithmetic number, because the mean of its divisors is an integer number (34700622).

Almost surely, 2^161936222 is an apocalyptic number.

161936222 is a deficient number, since it is larger than the sum of its proper divisors (115668754).

161936222 is a wasteful number, since it uses less digits than its factorization.

161936222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566882.

The product of its digits is 7776, while the sum is 32.

The square root of 161936222 is about 12725.4163782565. The cubic root of 161936222 is about 545.0646299922.

The spelling of 161936222 in words is "one hundred sixty-one million, nine hundred thirty-six thousand, two hundred twenty-two".