4825781538 has 32 divisors (see below), whose sum is σ = 10196283840. Its totient is φ = 1518419520.

The previous prime is 4825781531. The next prime is 4825781561. The reversal of 4825781538 is 8351875284.

It is not an unprimeable number, because it can be changed into a prime (4825781531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44833 + ... + 107988.

It is an arithmetic number, because the mean of its divisors is an integer number (318633870).

Almost surely, 2^4825781538 is an apocalyptic number.

4825781538 is an abundant number, since it is smaller than the sum of its proper divisors (5370502302).

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

4825781538 is a wasteful number, since it uses less digits than its factorization.

4825781538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153122.

The product of its digits is 2150400, while the sum is 51.

The square root of 4825781538 is about 69467.8453530840. The cubic root of 4825781538 is about 1689.8800771550.

It can be divided in two parts, 48257 and 81538, that added together give a triangular number (129795 = T₅₀₉).

The spelling of 4825781538 in words is "four billion, eight hundred twenty-five million, seven hundred eighty-one thousand, five hundred thirty-eight".