163641224 has 16 divisors (see below), whose sum is σ = 322976400. Its totient is φ = 77514192.

The previous prime is 163641211. The next prime is 163641241. The reversal of 163641224 is 422146361.

163641224 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3 ways as a sum of consecutive naturals, for example, 538142 + ... + 538445.

It is an arithmetic number, because the mean of its divisors is an integer number (20186025).

Almost surely, 2^163641224 is an apocalyptic number.

It is an amenable number.

163641224 is a deficient number, since it is larger than the sum of its proper divisors (159335176).

163641224 is a wasteful number, since it uses less digits than its factorization.

163641224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076612 (or 1076608 counting only the distinct ones).

The product of its digits is 6912, while the sum is 29.

The square root of 163641224 is about 12792.2329559776. The cubic root of 163641224 is about 546.9709229029.

Adding to 163641224 its reverse (422146361), we get a palindrome (585787585).

The spelling of 163641224 in words is "one hundred sixty-three million, six hundred forty-one thousand, two hundred twenty-four".