3861838 has 16 divisors (see below), whose sum is σ = 6210720. Its totient is φ = 1796256.

The previous prime is 3861821. The next prime is 3861841. The reversal of 3861838 is 8381683.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a junction number, because it is equal to n+sod(n) for n = 3861797 and 3861806.

It is a congruent number.

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, 568 + ... + 2836.

It is an arithmetic number, because the mean of its divisors is an integer number (388170).

Almost surely, 2^3861838 is an apocalyptic number.

3861838 is a deficient number, since it is larger than the sum of its proper divisors (2348882).

3861838 is a wasteful number, since it uses less digits than its factorization.

3861838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331.

The product of its digits is 27648, while the sum is 37.

The square root of 3861838 is about 1965.1559734535. The cubic root of 3861838 is about 156.8909949670.

The spelling of 3861838 in words is "three million, eight hundred sixty-one thousand, eight hundred thirty-eight".