168538812 has 48 divisors (see below), whose sum is σ = 424503072. Its totient is φ = 51736320.

The previous prime is 168538793. The next prime is 168538831. The reversal of 168538812 is 218835861.

168538812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (168538793) and next prime (168538831).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83398 + ... + 85394.

It is an arithmetic number, because the mean of its divisors is an integer number (8843814).

Almost surely, 2^168538812 is an apocalyptic number.

168538812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

168538812 is an abundant number, since it is smaller than the sum of its proper divisors (255964260).

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

168538812 is a wasteful number, since it uses less digits than its factorization.

168538812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558 (or 2556 counting only the distinct ones).

The product of its digits is 92160, while the sum is 42.

The square root of 168538812 is about 12982.2498820505. The cubic root of 168538812 is about 552.3741031572.

The spelling of 168538812 in words is "one hundred sixty-eight million, five hundred thirty-eight thousand, eight hundred twelve".