673388189 has 2 divisors, whose sum is σ = 673388190. Its totient is φ = 673388188.

The previous prime is 673388159. The next prime is 673388239. The reversal of 673388189 is 981883376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 671587225 + 1800964 = 25915^2 + 1342^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-673388189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 673388189.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (673388159) 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, 336694094 + 336694095.

It is an arithmetic number, because the mean of its divisors is an integer number (336694095).

Almost surely, 2^673388189 is an apocalyptic number.

It is an amenable number.

673388189 is a deficient number, since it is larger than the sum of its proper divisors (1).

673388189 is an equidigital number, since it uses as much as digits as its factorization.

673388189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 53.

The square root of 673388189 is about 25949.7242567238. The cubic root of 673388189 is about 876.5065480933.

The spelling of 673388189 in words is "six hundred seventy-three million, three hundred eighty-eight thousand, one hundred eighty-nine".