4531985539 has 4 divisors (see below), whose sum is σ = 4532272720. Its totient is φ = 4531698360.

The previous prime is 4531985503. The next prime is 4531985551. The reversal of 4531985539 is 9355891354.

4531985539 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9355891354 = 2 ⋅4677945677.

It is a cyclic number.

It is not a de Polignac number, because 4531985539 - 2⁹ = 4531985027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4531985569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118452 + ... + 151969.

It is an arithmetic number, because the mean of its divisors is an integer number (1133068180).

Almost surely, 2^4531985539 is an apocalyptic number.

4531985539 is a deficient number, since it is larger than the sum of its proper divisors (287181).

4531985539 is a wasteful number, since it uses less digits than its factorization.

4531985539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287180.

The product of its digits is 2916000, while the sum is 52.

The square root of 4531985539 is about 67320.0233140185. The cubic root of 4531985539 is about 1654.8660198279.

The spelling of 4531985539 in words is "four billion, five hundred thirty-one million, nine hundred eighty-five thousand, five hundred thirty-nine".