3861878781683 has 32 divisors (see below), whose sum is σ = 4549559519232. Its totient is φ = 3244088332800.

The previous prime is 3861878781661. The next prime is 3861878781703.

3861878781683 is nontrivially palindromic in base 10.

3861878781683 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3861878781683 - 2¹⁸ = 3861878519539 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3861878781683.

It is not an unprimeable number, because it can be changed into a prime (3861878781583) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7725368 + ... + 8210058.

It is an arithmetic number, because the mean of its divisors is an integer number (142173734976).

Almost surely, 2^{3861878781683} is an apocalyptic number.

3861878781683 is a deficient number, since it is larger than the sum of its proper divisors (687680737549).

3861878781683 is a wasteful number, since it uses less digits than its factorization.

3861878781683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485915.

The product of its digits is 520224768, while the sum is 74.

The spelling of 3861878781683 in words is "three trillion, eight hundred sixty-one billion, eight hundred seventy-eight million, seven hundred eighty-one thousand, six hundred eighty-three".