6539386073 has 18 divisors (see below), whose sum is σ = 7615009962. Its totient is φ = 5592058560.

The previous prime is 6539386027. The next prime is 6539386099. The reversal of 6539386073 is 3706839356.

It can be written as a sum of positive squares in only one way, i.e., 6154716304 + 384669769 = 78452^2 + 19613^2 .

It is not a de Polignac number, because 6539386073 - 2¹⁰ = 6539385049 is a prime.

It is a super-2 number, since 2×6539386073² = 85527140423492722658, which contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6539380073) 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 17 ways as a sum of consecutive naturals, for example, 3666740 + ... + 3668522.

It is an arithmetic number, because the mean of its divisors is an integer number (423056109).

Almost surely, 2^6539386073 is an apocalyptic number.

It is an amenable number.

6539386073 is a deficient number, since it is larger than the sum of its proper divisors (1075623889).

6539386073 is an equidigital number, since it uses as much as digits as its factorization.

6539386073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3605 (or 1811 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 50.

The square root of 6539386073 is about 80866.4706352392. The cubic root of 6539386073 is about 1870.0174508175.

The spelling of 6539386073 in words is "six billion, five hundred thirty-nine million, three hundred eighty-six thousand, seventy-three".