6542207489 has 2 divisors, whose sum is σ = 6542207490. Its totient is φ = 6542207488.

The previous prime is 6542207479. The next prime is 6542207501. The reversal of 6542207489 is 9847022456.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3452737600 + 3089469889 = 58760^2 + 55583^2 .

It is a cyclic number.

It is not a de Polignac number, because 6542207489 - 2⁴ = 6542207473 is a prime.

It is not a weakly prime, because it can be changed into another prime (6542207479) 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 as a sum of consecutive naturals, namely, 3271103744 + 3271103745.

It is an arithmetic number, because the mean of its divisors is an integer number (3271103745).

Almost surely, 2^6542207489 is an apocalyptic number.

It is an amenable number.

6542207489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542207489 is an equidigital number, since it uses as much as digits as its factorization.

6542207489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 967680, while the sum is 47.

The square root of 6542207489 is about 80883.9136602576. The cubic root of 6542207489 is about 1870.2863516231.

The spelling of 6542207489 in words is "six billion, five hundred forty-two million, two hundred seven thousand, four hundred eighty-nine".