168738518339 has 4 divisors (see below), whose sum is σ = 168950236224. Its totient is φ = 168526800456.

The previous prime is 168738518323. The next prime is 168738518411. The reversal of 168738518339 is 933815837861.

168738518339 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933815837861 = 392221 ⋅2380841.

It is a cyclic number.

It is not a de Polignac number, because 168738518339 - 2⁴ = 168738518323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168738518539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105857747 + ... + 105859340.

It is an arithmetic number, because the mean of its divisors is an integer number (42237559056).

Almost surely, 2^168738518339 is an apocalyptic number.

168738518339 is a deficient number, since it is larger than the sum of its proper divisors (211717885).

168738518339 is an equidigital number, since it uses as much as digits as its factorization.

168738518339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211717884.

The product of its digits is 26127360, while the sum is 62.

The spelling of 168738518339 in words is "one hundred sixty-eight billion, seven hundred thirty-eight million, five hundred eighteen thousand, three hundred thirty-nine".