163789 has 2 divisors, whose sum is σ = 163790. Its totient is φ = 163788.

The previous prime is 163781. The next prime is 163811. The reversal of 163789 is 987361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110889 + 52900 = 333^2 + 230^2 .

It is an emirp because it is prime and its reverse (987361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163789 - 2³ = 163781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163781) 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, 81894 + 81895.

It is an arithmetic number, because the mean of its divisors is an integer number (81895).

2¹⁶³⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

163789 is a deficient number, since it is larger than the sum of its proper divisors (1).

163789 is an equidigital number, since it uses as much as digits as its factorization.

163789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 163789 is about 404.7085370980. The cubic root of 163789 is about 54.7135520499.

The spelling of 163789 in words is "one hundred sixty-three thousand, seven hundred eighty-nine".