538481844 has 60 divisors (see below), whose sum is σ = 1410000900. Its totient is φ = 179200512.

The previous prime is 538481813. The next prime is 538481893. The reversal of 538481844 is 448184835.

It can be written as a sum of positive squares in 2 ways, for example, as 242985744 + 295496100 = 15588^2 + 17190^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 538481844.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 300102 + ... + 301890.

It is an arithmetic number, because the mean of its divisors is an integer number (23500015).

Almost surely, 2^538481844 is an apocalyptic number.

538481844 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

538481844 is an abundant number, since it is smaller than the sum of its proper divisors (871519056).

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

538481844 is a wasteful number, since it uses less digits than its factorization.

538481844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2734 (or 2723 counting only the distinct ones).

The product of its digits is 491520, while the sum is 45.

The square root of 538481844 is about 23205.2115698177. The cubic root of 538481844 is about 813.5614373348.

The spelling of 538481844 in words is "five hundred thirty-eight million, four hundred eighty-one thousand, eight hundred forty-four".