6981270739 has 2 divisors, whose sum is σ = 6981270740. Its totient is φ = 6981270738.

The previous prime is 6981270697. The next prime is 6981270749. The reversal of 6981270739 is 9370721896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6981270739 - 2⁹ = 6981270227 is a prime.

It is a super-2 number, since 2×6981270739² = 97476282262435212242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6981270749) 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, 3490635369 + 3490635370.

It is an arithmetic number, because the mean of its divisors is an integer number (3490635370).

Almost surely, 2^6981270739 is an apocalyptic number.

6981270739 is a deficient number, since it is larger than the sum of its proper divisors (1).

6981270739 is an equidigital number, since it uses as much as digits as its factorization.

6981270739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 6981270739 is about 83553.9989408047. The cubic root of 6981270739 is about 1911.2235737870.

The spelling of 6981270739 in words is "six billion, nine hundred eighty-one million, two hundred seventy thousand, seven hundred thirty-nine".