168708918 has 32 divisors (see below), whose sum is σ = 408305664. Its totient is φ = 45366912.

The previous prime is 168708889. The next prime is 168708919. The reversal of 168708918 is 819807861.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168708919) 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 15 ways as a sum of consecutive naturals, for example, 117430 + ... + 118857.

It is an arithmetic number, because the mean of its divisors is an integer number (12759552).

Almost surely, 2^168708918 is an apocalyptic number.

168708918 is an abundant number, since it is smaller than the sum of its proper divisors (239596746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168708918 is a wasteful number, since it uses less digits than its factorization.

168708918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236316.

The product of its (nonzero) digits is 193536, while the sum is 48.

The square root of 168708918 is about 12988.7997135994. The cubic root of 168708918 is about 552.5598774878.

The spelling of 168708918 in words is "one hundred sixty-eight million, seven hundred eight thousand, nine hundred eighteen".