168933608549 has 2 divisors, whose sum is σ = 168933608550. Its totient is φ = 168933608548.

The previous prime is 168933608509. The next prime is 168933608579. The reversal of 168933608549 is 945806339861.

168933608549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165799624225 + 3133984324 = 407185^2 + 55982^2 .

It is a cyclic number.

It is not a de Polignac number, because 168933608549 - 2²⁸ = 168665173093 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168933608491 and 168933608500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168933608509) 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, 84466804274 + 84466804275.

It is an arithmetic number, because the mean of its divisors is an integer number (84466804275).

Almost surely, 2^168933608549 is an apocalyptic number.

It is an amenable number.

168933608549 is a deficient number, since it is larger than the sum of its proper divisors (1).

168933608549 is an equidigital number, since it uses as much as digits as its factorization.

168933608549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 168933608549 in words is "one hundred sixty-eight billion, nine hundred thirty-three million, six hundred eight thousand, five hundred forty-nine".