3861236842 has 8 divisors (see below), whose sum is σ = 5991574500. Its totient is φ = 1864045344.

The previous prime is 3861236833. The next prime is 3861236857. The reversal of 3861236842 is 2486321683.

3861236842 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3783603121 + 77633721 = 61511^2 + 8811^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33286467 + ... + 33286582.

Almost surely, 2^3861236842 is an apocalyptic number.

3861236842 is a deficient number, since it is larger than the sum of its proper divisors (2130337658).

3861236842 is a wasteful number, since it uses less digits than its factorization.

3861236842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66573080.

The product of its digits is 331776, while the sum is 43.

The square root of 3861236842 is about 62138.8513089838. The cubic root of 3861236842 is about 1568.8285366479.

The spelling of 3861236842 in words is "three billion, eight hundred sixty-one million, two hundred thirty-six thousand, eight hundred forty-two".