3856818 has 32 divisors (see below), whose sum is σ = 8876160. Its totient is φ = 1094400.

The previous prime is 3856813. The next prime is 3856823. The reversal of 3856818 is 8186583.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3856813) and next prime (3856823).

It is not an unprimeable number, because it can be changed into a prime (3856813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9418 + ... + 9818.

It is an arithmetic number, because the mean of its divisors is an integer number (277380).

Almost surely, 2^3856818 is an apocalyptic number.

3856818 is an abundant number, since it is smaller than the sum of its proper divisors (5019342).

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

3856818 is a wasteful number, since it uses less digits than its factorization.

3856818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642.

The product of its digits is 46080, while the sum is 39.

The square root of 3856818 is about 1963.8783058021. The cubic root of 3856818 is about 156.8229846651.

The spelling of 3856818 in words is "three million, eight hundred fifty-six thousand, eight hundred eighteen".