168368933 has 2 divisors, whose sum is σ = 168368934. Its totient is φ = 168368932.

The previous prime is 168368917. The next prime is 168368939. The reversal of 168368933 is 339863861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145491844 + 22877089 = 12062^2 + 4783^2 .

It is an emirp because it is prime and its reverse (339863861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168368933 - 2⁴ = 168368917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168368939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84184466 + 84184467.

It is an arithmetic number, because the mean of its divisors is an integer number (84184467).

Almost surely, 2^168368933 is an apocalyptic number.

It is an amenable number.

168368933 is a deficient number, since it is larger than the sum of its proper divisors (1).

168368933 is an equidigital number, since it uses as much as digits as its factorization.

168368933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 47.

The square root of 168368933 is about 12975.7054914174. The cubic root of 168368933 is about 552.1884519423.

The spelling of 168368933 in words is "one hundred sixty-eight million, three hundred sixty-eight thousand, nine hundred thirty-three".