163995823 has 2 divisors, whose sum is σ = 163995824. Its totient is φ = 163995822.

The previous prime is 163995809. The next prime is 163995827. The reversal of 163995823 is 328599361.

It is a happy number.

163995823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-163995823 is a prime.

It is a super-2 number, since 2×163995823² = 53789259922894658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163995827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81997911 + 81997912.

It is an arithmetic number, because the mean of its divisors is an integer number (81997912).

Almost surely, 2^163995823 is an apocalyptic number.

163995823 is a deficient number, since it is larger than the sum of its proper divisors (1).

163995823 is an equidigital number, since it uses as much as digits as its factorization.

163995823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 46.

The square root of 163995823 is about 12806.0853893764. The cubic root of 163995823 is about 547.3657203550.

It can be divided in two parts, 16399 and 5823, that added together give a palindrome (22222).

The spelling of 163995823 in words is "one hundred sixty-three million, nine hundred ninety-five thousand, eight hundred twenty-three".