538663168 has 108 divisors (see below), whose sum is σ = 1164742740. Its totient is φ = 248242176.

The previous prime is 538663141. The next prime is 538663171. The reversal of 538663168 is 861366835.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 162613504 + 376049664 = 12752^2 + 19392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10163430 + ... + 10163482.

It is an arithmetic number, because the mean of its divisors is an integer number (10784655).

Almost surely, 2^538663168 is an apocalyptic number.

538663168 is a gapful number since it is divisible by the number (58) 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 538663168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582371370).

538663168 is an abundant number, since it is smaller than the sum of its proper divisors (626079572).

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

538663168 is an equidigital number, since it uses as much as digits as its factorization.

538663168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 121 counting only the distinct ones).

The product of its digits is 622080, while the sum is 46.

The square root of 538663168 is about 23209.1182081526. The cubic root of 538663168 is about 813.6527444425.

The spelling of 538663168 in words is "five hundred thirty-eight million, six hundred sixty-three thousand, one hundred sixty-eight".