168730459 has 2 divisors, whose sum is σ = 168730460. Its totient is φ = 168730458.

The previous prime is 168730417. The next prime is 168730477. The reversal of 168730459 is 954037861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168730459 is a prime.

It is not a weakly prime, because it can be changed into another prime (168730759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84365229 + 84365230.

It is an arithmetic number, because the mean of its divisors is an integer number (84365230).

Almost surely, 2^168730459 is an apocalyptic number.

168730459 is a deficient number, since it is larger than the sum of its proper divisors (1).

168730459 is an equidigital number, since it uses as much as digits as its factorization.

168730459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 168730459 is about 12989.6289015507. The cubic root of 168730459 is about 552.5833937032.

The spelling of 168730459 in words is "one hundred sixty-eight million, seven hundred thirty thousand, four hundred fifty-nine".