168013589 has 2 divisors, whose sum is σ = 168013590. Its totient is φ = 168013588.

The previous prime is 168013541. The next prime is 168013591. The reversal of 168013589 is 985310861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88981489 + 79032100 = 9433^2 + 8890^2 .

It is a cyclic number.

It is not a de Polignac number, because 168013589 - 2¹² = 168009493 is a prime.

Together with 168013591, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_9398156 and since 168013589 and 9398156 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168013289) 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, 84006794 + 84006795.

It is an arithmetic number, because the mean of its divisors is an integer number (84006795).

Almost surely, 2^168013589 is an apocalyptic number.

It is an amenable number.

168013589 is a deficient number, since it is larger than the sum of its proper divisors (1).

168013589 is an equidigital number, since it uses as much as digits as its factorization.

168013589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 41.

The square root of 168013589 is about 12962.0055932714. The cubic root of 168013589 is about 551.7997122643.

The spelling of 168013589 in words is "one hundred sixty-eight million, thirteen thousand, five hundred eighty-nine".