1323741689 has 2 divisors, whose sum is σ = 1323741690. Its totient is φ = 1323741688.

The previous prime is 1323741673. The next prime is 1323741707. The reversal of 1323741689 is 9861473231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824666089 + 499075600 = 28717^2 + 22340^2 .

It is an emirp because it is prime and its reverse (9861473231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1323741689 - 2⁴ = 1323741673 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323741649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661870844 + 661870845.

It is an arithmetic number, because the mean of its divisors is an integer number (661870845).

Almost surely, 2^1323741689 is an apocalyptic number.

It is an amenable number.

1323741689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323741689 is an equidigital number, since it uses as much as digits as its factorization.

1323741689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 1323741689 is about 36383.2611100215. The cubic root of 1323741689 is about 1097.9968195656.

The spelling of 1323741689 in words is "one billion, three hundred twenty-three million, seven hundred forty-one thousand, six hundred eighty-nine".