3861138 has 8 divisors (see below), whose sum is σ = 7722288. Its totient is φ = 1287044.

The previous prime is 3861119. The next prime is 3861167. The reversal of 3861138 is 8311683.

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

3861138 is an admirable number.

It is a Curzon number.

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, 321756 + ... + 321767.

It is an arithmetic number, because the mean of its divisors is an integer number (965286).

Almost surely, 2^3861138 is an apocalyptic number.

3861138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3861138 is a wasteful number, since it uses less digits than its factorization.

3861138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643528.

The product of its digits is 3456, while the sum is 30.

The square root of 3861138 is about 1964.9778624707. The cubic root of 3861138 is about 156.8815149964.

The spelling of 3861138 in words is "three million, eight hundred sixty-one thousand, one hundred thirty-eight".