4538139539 has 4 divisors (see below), whose sum is σ = 4539435600. Its totient is φ = 4536843480.

The previous prime is 4538139517. The next prime is 4538139553. The reversal of 4538139539 is 9359318354.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4538139539 - 2³² = 243172243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4538139509) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 642764 + ... + 649785.

It is an arithmetic number, because the mean of its divisors is an integer number (1134858900).

Almost surely, 2^4538139539 is an apocalyptic number.

4538139539 is a deficient number, since it is larger than the sum of its proper divisors (1296061).

4538139539 is a wasteful number, since it uses less digits than its factorization.

4538139539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296060.

The product of its digits is 1749600, while the sum is 50.

The square root of 4538139539 is about 67365.7148629776. The cubic root of 4538139539 is about 1655.6147306098.

The spelling of 4538139539 in words is "four billion, five hundred thirty-eight million, one hundred thirty-nine thousand, five hundred thirty-nine".