3868673886689 has 4 divisors (see below), whose sum is σ = 3869027621124. Its totient is φ = 3868320152256.

The previous prime is 3868673886647. The next prime is 3868673886697. The reversal of 3868673886689 is 9866883768683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3534745928464 + 333927958225 = 1880092^2 + 577865^2 .

It is a cyclic number.

It is not a de Polignac number, because 3868673886689 - 2⁸ = 3868673886433 is a prime.

It is a super-2 number, since 2×3868673886689² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3868673886689.

It is not an unprimeable number, because it can be changed into a prime (3868673886289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176850812 + ... + 176872685.

It is an arithmetic number, because the mean of its divisors is an integer number (967256905281).

Almost surely, 2^{3868673886689} is an apocalyptic number.

It is an amenable number.

3868673886689 is a deficient number, since it is larger than the sum of its proper divisors (353734435).

3868673886689 is a wasteful number, since it uses less digits than its factorization.

3868673886689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353734434.

The product of its digits is 24078974976, while the sum is 86.

The spelling of 3868673886689 in words is "three trillion, eight hundred sixty-eight billion, six hundred seventy-three million, eight hundred eighty-six thousand, six hundred eighty-nine".