161922244 has 48 divisors (see below), whose sum is σ = 315415296. Its totient is φ = 72122400.

The previous prime is 161922227. The next prime is 161922247. The reversal of 161922244 is 442229161.

161922244 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 (161922247) 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, 767299 + ... + 767509.

It is an arithmetic number, because the mean of its divisors is an integer number (6571152).

Almost surely, 2^161922244 is an apocalyptic number.

It is an amenable number.

161922244 is a deficient number, since it is larger than the sum of its proper divisors (153493052).

161922244 is a wasteful number, since it uses less digits than its factorization.

161922244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 494 counting only the distinct ones).

The product of its digits is 6912, while the sum is 31.

The square root of 161922244 is about 12724.8671505835. The cubic root of 161922244 is about 545.0489465901.

The spelling of 161922244 in words is "one hundred sixty-one million, nine hundred twenty-two thousand, two hundred forty-four".