6542749739 has 2 divisors, whose sum is σ = 6542749740. Its totient is φ = 6542749738.

The previous prime is 6542749721. The next prime is 6542749771. The reversal of 6542749739 is 9379472456.

6542749739 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6542749739 - 2⁸ = 6542749483 is a prime.

It is not a weakly prime, because it can be changed into another prime (6542749709) 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 as a sum of consecutive naturals, namely, 3271374869 + 3271374870.

It is an arithmetic number, because the mean of its divisors is an integer number (3271374870).

Almost surely, 2^6542749739 is an apocalyptic number.

6542749739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6542749739 is an equidigital number, since it uses as much as digits as its factorization.

6542749739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11430720, while the sum is 56.

The square root of 6542749739 is about 80887.2656170302. The cubic root of 6542749739 is about 1870.3380230075.

The spelling of 6542749739 in words is "six billion, five hundred forty-two million, seven hundred forty-nine thousand, seven hundred thirty-nine".