538817688 has 96 divisors (see below), whose sum is σ = 1528899840. Its totient is φ = 171103680.

The previous prime is 538817687. The next prime is 538817689. The reversal of 538817688 is 886718835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (538817687) and next prime (538817689).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538817687) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 547645 + ... + 548627.

It is an arithmetic number, because the mean of its divisors is an integer number (15926040).

Almost surely, 2^538817688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538817688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (764449920).

538817688 is an abundant number, since it is smaller than the sum of its proper divisors (990082152).

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

538817688 is a wasteful number, since it uses less digits than its factorization.

538817688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349 (or 1342 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 538817688 is about 23212.4468335417. The cubic root of 538817688 is about 813.7305380184.

The spelling of 538817688 in words is "five hundred thirty-eight million, eight hundred seventeen thousand, six hundred eighty-eight".