163988023 has 2 divisors, whose sum is σ = 163988024. Its totient is φ = 163988022.

The previous prime is 163988021. The next prime is 163988039. The reversal of 163988023 is 320889361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 163988023 - 2¹ = 163988021 is a prime.

Together with 163988021, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163988021) by changing a digit.

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 as a sum of consecutive naturals, namely, 81994011 + 81994012.

It is an arithmetic number, because the mean of its divisors is an integer number (81994012).

Almost surely, 2^163988023 is an apocalyptic number.

163988023 is a deficient number, since it is larger than the sum of its proper divisors (1).

163988023 is an equidigital number, since it uses as much as digits as its factorization.

163988023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 163988023 is about 12805.7808430412. The cubic root of 163988023 is about 547.3570422471.

The spelling of 163988023 in words is "one hundred sixty-three million, nine hundred eighty-eight thousand, twenty-three".