168431608 has 16 divisors (see below), whose sum is σ = 323512560. Its totient is φ = 82161600.

The previous prime is 168431581. The next prime is 168431609. The reversal of 168431608 is 806134861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168431609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256428 + ... + 257083.

It is an arithmetic number, because the mean of its divisors is an integer number (20219535).

Almost surely, 2^168431608 is an apocalyptic number.

It is an amenable number.

168431608 is a deficient number, since it is larger than the sum of its proper divisors (155080952).

168431608 is a wasteful number, since it uses less digits than its factorization.

168431608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513558 (or 513554 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 168431608 is about 12978.1203569700. The cubic root of 168431608 is about 552.2569604595.

The spelling of 168431608 in words is "one hundred sixty-eight million, four hundred thirty-one thousand, six hundred eight".