168474816 has 196 divisors, whose sum is σ = 526371312. Its totient is φ = 53374464.

The previous prime is 168474809. The next prime is 168474821. The reversal of 168474816 is 618474861.

168474816 is a `hidden beast` number, since 168 + 4 + 7 + 481 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1073010 + ... + 1073166.

Almost surely, 2^168474816 is an apocalyptic number.

168474816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168474816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (263185656).

168474816 is an abundant number, since it is smaller than the sum of its proper divisors (357896496).

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

168474816 is an equidigital number, since it uses as much as digits as its factorization.

168474816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 185 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 168474816 is about 12979.7848980636. The cubic root of 168474816 is about 552.3041801765.

Adding to 168474816 its sum of digits (45), we get a palindrome (168474861).

The spelling of 168474816 in words is "one hundred sixty-eight million, four hundred seventy-four thousand, eight hundred sixteen".