3861286855 has 8 divisors (see below), whose sum is σ = 4638035952. Its totient is φ = 3086035008.

The previous prime is 3861286853. The next prime is 3861286859. The reversal of 3861286855 is 5586821683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3861286855 - 2¹ = 3861286853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861286853) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368629 + ... + 378958.

It is an arithmetic number, because the mean of its divisors is an integer number (579754494).

Almost surely, 2^3861286855 is an apocalyptic number.

3861286855 is a deficient number, since it is larger than the sum of its proper divisors (776749097).

3861286855 is a wasteful number, since it uses less digits than its factorization.

3861286855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 748625.

The product of its digits is 2764800, while the sum is 52.

The square root of 3861286855 is about 62139.2537370703. The cubic root of 3861286855 is about 1568.8353100805.

The spelling of 3861286855 in words is "three billion, eight hundred sixty-one million, two hundred eighty-six thousand, eight hundred fifty-five".