6539485291 has 2 divisors, whose sum is σ = 6539485292. Its totient is φ = 6539485290.

The previous prime is 6539485283. The next prime is 6539485301. The reversal of 6539485291 is 1925849356.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6539485291 - 2³ = 6539485283 is a prime.

It is not a weakly prime, because it can be changed into another prime (6539485241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3269742645 + 3269742646.

It is an arithmetic number, because the mean of its divisors is an integer number (3269742646).

Almost surely, 2^6539485291 is an apocalyptic number.

6539485291 is a deficient number, since it is larger than the sum of its proper divisors (1).

6539485291 is an equidigital number, since it uses as much as digits as its factorization.

6539485291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2332800, while the sum is 52.

The square root of 6539485291 is about 80867.0841010111. The cubic root of 6539485291 is about 1870.0269083034.

The spelling of 6539485291 in words is "six billion, five hundred thirty-nine million, four hundred eighty-five thousand, two hundred ninety-one".