168449328139 has 4 divisors (see below), whose sum is σ = 170756853256. Its totient is φ = 166141803024.

The previous prime is 168449328133. The next prime is 168449328163. The reversal of 168449328139 is 931823944861.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 168449328139 - 2¹¹ = 168449326091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168449328133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153762449 + ... + 1153762594.

It is an arithmetic number, because the mean of its divisors is an integer number (42689213314).

Almost surely, 2^168449328139 is an apocalyptic number.

168449328139 is a deficient number, since it is larger than the sum of its proper divisors (2307525117).

168449328139 is an equidigital number, since it uses as much as digits as its factorization.

168449328139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307525116.

The product of its digits is 8957952, while the sum is 58.

The spelling of 168449328139 in words is "one hundred sixty-eight billion, four hundred forty-nine million, three hundred twenty-eight thousand, one hundred thirty-nine".