3861837 has 40 divisors (see below), whose sum is σ = 6776000. Its totient is φ = 2190888.

The previous prime is 3861821. The next prime is 3861841. The reversal of 3861837 is 7381683.

3861837 is a `hidden beast` number, since 3 + 8 + 618 + 37 = 666.

It is not a de Polignac number, because 3861837 - 2⁴ = 3861821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3861817) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 27714 + ... + 27852.

It is an arithmetic number, because the mean of its divisors is an integer number (169400).

Almost surely, 2^3861837 is an apocalyptic number.

It is an amenable number.

3861837 is a deficient number, since it is larger than the sum of its proper divisors (2914163).

3861837 is an equidigital number, since it uses as much as digits as its factorization.

3861837 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172 (or 149 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3861837 is about 1965.1557190208. The cubic root of 3861837 is about 156.8909814250.

The spelling of 3861837 in words is "three million, eight hundred sixty-one thousand, eight hundred thirty-seven".