163563243 has 16 divisors (see below), whose sum is σ = 225039360. Its totient is φ = 105613056.

The previous prime is 163563241. The next prime is 163563251. The reversal of 163563243 is 342365361.

It is not a de Polignac number, because 163563243 - 2¹ = 163563241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163563241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7698 + ... + 19656.

It is an arithmetic number, because the mean of its divisors is an integer number (14064960).

Almost surely, 2^163563243 is an apocalyptic number.

163563243 is a deficient number, since it is larger than the sum of its proper divisors (61476117).

163563243 is a wasteful number, since it uses less digits than its factorization.

163563243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12106.

The product of its digits is 38880, while the sum is 33.

The square root of 163563243 is about 12789.1846104433. The cubic root of 163563243 is about 546.8840252464.

The spelling of 163563243 in words is "one hundred sixty-three million, five hundred sixty-three thousand, two hundred forty-three".