3856502687842 has 16 divisors (see below), whose sum is σ = 6632682154560. Its totient is φ = 1647403193808.

The previous prime is 3856502687809. The next prime is 3856502687867. The reversal of 3856502687842 is 2487862056583.

It is a super-2 number, since 2×3856502687842² (a number of 26 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448634917 + ... + 448643512.

It is an arithmetic number, because the mean of its divisors is an integer number (414542634660).

Almost surely, 2^{3856502687842} is an apocalyptic number.

3856502687842 is a deficient number, since it is larger than the sum of its proper divisors (2776179466718).

3856502687842 is a wasteful number, since it uses less digits than its factorization.

3856502687842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897278745.

The product of its (nonzero) digits is 154828800, while the sum is 64.

The spelling of 3856502687842 in words is "three trillion, eight hundred fifty-six billion, five hundred two million, six hundred eighty-seven thousand, eight hundred forty-two".