168318 has 20 divisors (see below), whose sum is σ = 377520. Its totient is φ = 56052.

The previous prime is 168293. The next prime is 168323. The reversal of 168318 is 813861.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 3.

It is a junction number, because it is equal to n+sod(n) for n = 168291 and 168300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 358 + ... + 681.

It is an arithmetic number, because the mean of its divisors is an integer number (18876).

2¹⁶⁸³¹⁸ is an apocalyptic number.

168318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

168318 is an abundant number, since it is smaller than the sum of its proper divisors (209202).

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

168318 is a wasteful number, since it uses less digits than its factorization.

168318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053 (or 1044 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 168318 is about 410.2657675215. The cubic root of 168318 is about 55.2132765796.

The spelling of 168318 in words is "one hundred sixty-eight thousand, three hundred eighteen".