168318683238 has 16 divisors (see below), whose sum is σ = 356439564720. Its totient is φ = 52805861376.

The previous prime is 168318683231. The next prime is 168318683249. The reversal of 168318683238 is 832386813861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168318683231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 825091483 + ... + 825091686.

It is an arithmetic number, because the mean of its divisors is an integer number (22277472795).

Almost surely, 2^168318683238 is an apocalyptic number.

168318683238 is an abundant number, since it is smaller than the sum of its proper divisors (188120881482).

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

168318683238 is a wasteful number, since it uses less digits than its factorization.

168318683238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650183191.

The product of its digits is 7962624, while the sum is 57.

The spelling of 168318683238 in words is "one hundred sixty-eight billion, three hundred eighteen million, six hundred eighty-three thousand, two hundred thirty-eight".