168830729 has 2 divisors, whose sum is σ = 168830730. Its totient is φ = 168830728.

The previous prime is 168830707. The next prime is 168830747. The reversal of 168830729 is 927038861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151856329 + 16974400 = 12323^2 + 4120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168830729 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 168830729.

It is not a weakly prime, because it can be changed into another prime (168830749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84415364 + 84415365.

It is an arithmetic number, because the mean of its divisors is an integer number (84415365).

Almost surely, 2^168830729 is an apocalyptic number.

It is an amenable number.

168830729 is a deficient number, since it is larger than the sum of its proper divisors (1).

168830729 is an equidigital number, since it uses as much as digits as its factorization.

168830729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 168830729 is about 12993.4879458904. The cubic root of 168830729 is about 552.6928316895.

The spelling of 168830729 in words is "one hundred sixty-eight million, eight hundred thirty thousand, seven hundred twenty-nine".