168513318 has 128 divisors (see below), whose sum is σ = 424627200. Its totient is φ = 49268736.

The previous prime is 168513313. The next prime is 168513329. The reversal of 168513318 is 813315861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168513313) 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 63 ways as a sum of consecutive naturals, for example, 873030 + ... + 873222.

It is an arithmetic number, because the mean of its divisors is an integer number (3317400).

Almost surely, 2^168513318 is an apocalyptic number.

168513318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 168513318, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212313600).

168513318 is an abundant number, since it is smaller than the sum of its proper divisors (256113882).

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

168513318 is a wasteful number, since it uses less digits than its factorization.

168513318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283 (or 277 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 168513318 is about 12981.2679658036. The cubic root of 168513318 is about 552.3462501554.

The spelling of 168513318 in words is "one hundred sixty-eight million, five hundred thirteen thousand, three hundred eighteen".