3868778659 has 2 divisors, whose sum is σ = 3868778660. Its totient is φ = 3868778658.

The previous prime is 3868778657. The next prime is 3868778699. The reversal of 3868778659 is 9568778683.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3868778659 - 2¹ = 3868778657 is a prime.

Together with 3868778657, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3868778594 and 3868778603.

It is not a weakly prime, because it can be changed into another prime (3868778657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1934389329 + 1934389330.

It is an arithmetic number, because the mean of its divisors is an integer number (1934389330).

Almost surely, 2^3868778659 is an apocalyptic number.

3868778659 is a deficient number, since it is larger than the sum of its proper divisors (1).

3868778659 is an equidigital number, since it uses as much as digits as its factorization.

3868778659 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 67.

The square root of 3868778659 is about 62199.5069031902. The cubic root of 3868778659 is about 1569.8492909819.

The spelling of 3868778659 in words is "three billion, eight hundred sixty-eight million, seven hundred seventy-eight thousand, six hundred fifty-nine".