6858642719 has 2 divisors, whose sum is σ = 6858642720. Its totient is φ = 6858642718.

The previous prime is 6858642701. The next prime is 6858642761. The reversal of 6858642719 is 9172468586.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6858642719 is a prime.

It is a super-2 number, since 2×6858642719² = 94081959893783425922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6858642779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3429321359 + 3429321360.

It is an arithmetic number, because the mean of its divisors is an integer number (3429321360).

Almost surely, 2^6858642719 is an apocalyptic number.

6858642719 is a deficient number, since it is larger than the sum of its proper divisors (1).

6858642719 is an equidigital number, since it uses as much as digits as its factorization.

6858642719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5806080, while the sum is 56.

The square root of 6858642719 is about 82816.9229022668. The cubic root of 6858642719 is about 1899.9670094918.

The spelling of 6858642719 in words is "six billion, eight hundred fifty-eight million, six hundred forty-two thousand, seven hundred nineteen".