1538825244 has 144 divisors (see below), whose sum is σ = 4315788288. Its totient is φ = 424512000.

The previous prime is 1538825149. The next prime is 1538825251. The reversal of 1538825244 is 4425288351.

1538825244 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1538825196 and 1538825205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 764199 + ... + 766209.

It is an arithmetic number, because the mean of its divisors is an integer number (29970752).

Almost surely, 2^1538825244 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 1538825244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2157894144).

1538825244 is an abundant number, since it is smaller than the sum of its proper divisors (2776963044).

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

1538825244 is a wasteful number, since it uses less digits than its factorization.

1538825244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088 (or 2075 counting only the distinct ones).

The product of its digits is 307200, while the sum is 42.

The square root of 1538825244 is about 39227.8631077452. The cubic root of 1538825244 is about 1154.5066373608.

The spelling of 1538825244 in words is "one billion, five hundred thirty-eight million, eight hundred twenty-five thousand, two hundred forty-four".