161043244 has 48 divisors (see below), whose sum is σ = 312439680. Its totient is φ = 72304640.

The previous prime is 161043229. The next prime is 161043307. The reversal of 161043244 is 442340161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130422 + ... + 131650.

It is an arithmetic number, because the mean of its divisors is an integer number (6509160).

Almost surely, 2^161043244 is an apocalyptic number.

It is an amenable number.

161043244 is a deficient number, since it is larger than the sum of its proper divisors (151396436).

161043244 is a wasteful number, since it uses less digits than its factorization.

161043244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1338 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 161043244 is about 12690.2814783597. The cubic root of 161043244 is about 544.0608847296.

The spelling of 161043244 in words is "one hundred sixty-one million, forty-three thousand, two hundred forty-four".