7868085919 has 2 divisors, whose sum is σ = 7868085920. Its totient is φ = 7868085918.

The previous prime is 7868085917. The next prime is 7868085931. The reversal of 7868085919 is 9195808687.

7868085919 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 7868085919 - 2¹ = 7868085917 is a prime.

It is a super-2 number, since 2×7868085919² (a number of 21 digits) contains 22 as substring.

Together with 7868085917, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7868085917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3934042959 + 3934042960.

It is an arithmetic number, because the mean of its divisors is an integer number (3934042960).

Almost surely, 2^7868085919 is an apocalyptic number.

7868085919 is a deficient number, since it is larger than the sum of its proper divisors (1).

7868085919 is an equidigital number, since it uses as much as digits as its factorization.

7868085919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8709120, while the sum is 61.

The square root of 7868085919 is about 88702.2317588458. The cubic root of 7868085919 is about 1988.9461789899.

The spelling of 7868085919 in words is "seven billion, eight hundred sixty-eight million, eighty-five thousand, nine hundred nineteen".