4521248538 has 16 divisors (see below), whose sum is σ = 9354307680. Its totient is φ = 1455114416.

The previous prime is 4521248527. The next prime is 4521248573. The reversal of 4521248538 is 8358421254.

It is a self number, because there is not a number n which added to its sum of digits gives 4521248538.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12991920 + ... + 12992267.

It is an arithmetic number, because the mean of its divisors is an integer number (584644230).

Almost surely, 2^4521248538 is an apocalyptic number.

4521248538 is an abundant number, since it is smaller than the sum of its proper divisors (4833059142).

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

4521248538 is a wasteful number, since it uses less digits than its factorization.

4521248538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25984221.

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

The square root of 4521248538 is about 67240.2300561204. The cubic root of 4521248538 is about 1653.5581053433.

It can be divided in two parts, 452 and 1248538, that added together give a triangular number (1248990 = T₁₅₈₀).

The spelling of 4521248538 in words is "four billion, five hundred twenty-one million, two hundred forty-eight thousand, five hundred thirty-eight".