6539485289 has 4 divisors (see below), whose sum is σ = 6577285956. Its totient is φ = 6501684624.

The previous prime is 6539485283. The next prime is 6539485291. The reversal of 6539485289 is 9825849356.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6346830889 + 192654400 = 79667^2 + 13880^2 .

It is a cyclic number.

It is not a de Polignac number, because 6539485289 - 2⁴ = 6539485273 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6539485283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18900074 + ... + 18900419.

It is an arithmetic number, because the mean of its divisors is an integer number (1644321489).

Almost surely, 2^6539485289 is an apocalyptic number.

It is an amenable number.

6539485289 is a deficient number, since it is larger than the sum of its proper divisors (37800667).

6539485289 is a wasteful number, since it uses less digits than its factorization.

6539485289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37800666.

The product of its digits is 18662400, while the sum is 59.

The square root of 6539485289 is about 80867.0840886451. The cubic root of 6539485289 is about 1870.0269081127.

The spelling of 6539485289 in words is "six billion, five hundred thirty-nine million, four hundred eighty-five thousand, two hundred eighty-nine".