163243663 has 4 divisors (see below), whose sum is σ = 178084008. Its totient is φ = 148403320.

The previous prime is 163243651. The next prime is 163243681. The reversal of 163243663 is 366342361.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 163243663 - 2⁵ = 163243631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163243693) 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, 7420156 + ... + 7420177.

It is an arithmetic number, because the mean of its divisors is an integer number (44521002).

Almost surely, 2^163243663 is an apocalyptic number.

163243663 is a deficient number, since it is larger than the sum of its proper divisors (14840345).

163243663 is a wasteful number, since it uses less digits than its factorization.

163243663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14840344.

The product of its digits is 46656, while the sum is 34.

The square root of 163243663 is about 12776.6843508009. The cubic root of 163243663 is about 546.5276143869.

The spelling of 163243663 in words is "one hundred sixty-three million, two hundred forty-three thousand, six hundred sixty-three".