168430513 has 2 divisors, whose sum is σ = 168430514. Its totient is φ = 168430512.

The previous prime is 168430477. The next prime is 168430517. The reversal of 168430513 is 315034861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136258929 + 32171584 = 11673^2 + 5672^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168430513 is a prime.

It is not a weakly prime, because it can be changed into another prime (168430517) 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, 84215256 + 84215257.

It is an arithmetic number, because the mean of its divisors is an integer number (84215257).

Almost surely, 2^168430513 is an apocalyptic number.

It is an amenable number.

168430513 is a deficient number, since it is larger than the sum of its proper divisors (1).

168430513 is an equidigital number, since it uses as much as digits as its factorization.

168430513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 168430513 is about 12978.0781705151. The cubic root of 168430513 is about 552.2557636875.

The spelling of 168430513 in words is "one hundred sixty-eight million, four hundred thirty thousand, five hundred thirteen".