6930768139 has 2 divisors, whose sum is σ = 6930768140. Its totient is φ = 6930768138.

The previous prime is 6930768107. The next prime is 6930768151. The reversal of 6930768139 is 9318670396.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6930768139 - 2⁵ = 6930768107 is a prime.

It is not a weakly prime, because it can be changed into another prime (6930768839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3465384069 + 3465384070.

It is an arithmetic number, because the mean of its divisors is an integer number (3465384070).

Almost surely, 2^6930768139 is an apocalyptic number.

6930768139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6930768139 is an equidigital number, since it uses as much as digits as its factorization.

6930768139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 52.

The square root of 6930768139 is about 83251.2350599077. The cubic root of 6930768139 is about 1906.6038109132.

The spelling of 6930768139 in words is "six billion, nine hundred thirty million, seven hundred sixty-eight thousand, one hundred thirty-nine".