168003817 has 2 divisors, whose sum is σ = 168003818. Its totient is φ = 168003816.

The previous prime is 168003811. The next prime is 168003827. The reversal of 168003817 is 718300861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161264601 + 6739216 = 12699^2 + 2596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168003817 is a prime.

It is not a weakly prime, because it can be changed into another prime (168003811) 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, 84001908 + 84001909.

It is an arithmetic number, because the mean of its divisors is an integer number (84001909).

Almost surely, 2^168003817 is an apocalyptic number.

It is an amenable number.

168003817 is a deficient number, since it is larger than the sum of its proper divisors (1).

168003817 is an equidigital number, since it uses as much as digits as its factorization.

168003817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 168003817 is about 12961.6286399511. The cubic root of 168003817 is about 551.7890141389.

The spelling of 168003817 in words is "one hundred sixty-eight million, three thousand, eight hundred seventeen".