163982789 has 2 divisors, whose sum is σ = 163982790. Its totient is φ = 163982788.

The previous prime is 163982783. The next prime is 163982803. The reversal of 163982789 is 987289361.

163982789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 160149025 + 3833764 = 12655^2 + 1958^2 .

It is an emirp because it is prime and its reverse (987289361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 163982789 - 2¹² = 163978693 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 163982789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (163982783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81991394 + 81991395.

It is an arithmetic number, because the mean of its divisors is an integer number (81991395).

Almost surely, 2^163982789 is an apocalyptic number.

It is an amenable number.

163982789 is a deficient number, since it is larger than the sum of its proper divisors (1).

163982789 is an equidigital number, since it uses as much as digits as its factorization.

163982789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 53.

The square root of 163982789 is about 12805.5764805806. The cubic root of 163982789 is about 547.3512188600.

The spelling of 163982789 in words is "one hundred sixty-three million, nine hundred eighty-two thousand, seven hundred eighty-nine".