168335139 has 32 divisors (see below), whose sum is σ = 277171200. Its totient is φ = 90523776.

The previous prime is 168335129. The next prime is 168335147. The reversal of 168335139 is 931533861.

It is not a de Polignac number, because 168335139 - 2⁹ = 168334627 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168335097 and 168335106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168335119) 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 in 31 ways as a sum of consecutive naturals, for example, 12682 + ... + 22304.

It is an arithmetic number, because the mean of its divisors is an integer number (8661600).

Almost surely, 2^168335139 is an apocalyptic number.

168335139 is a deficient number, since it is larger than the sum of its proper divisors (108836061).

168335139 is an equidigital number, since it uses as much as digits as its factorization.

168335139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9664 (or 9650 counting only the distinct ones).

The product of its digits is 58320, while the sum is 39.

The square root of 168335139 is about 12974.4032232700. The cubic root of 168335139 is about 552.1515054882.

The spelling of 168335139 in words is "one hundred sixty-eight million, three hundred thirty-five thousand, one hundred thirty-nine".