3873618 has 48 divisors (see below), whose sum is σ = 9749376. Its totient is φ = 1088640.

The previous prime is 3873577. The next prime is 3873629. The reversal of 3873618 is 8163783.

3873618 is a `hidden beast` number, since 38 + 7 + 3 + 618 = 666.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8730 + ... + 9162.

It is an arithmetic number, because the mean of its divisors is an integer number (203112).

Almost surely, 2^3873618 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3873618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4874688).

3873618 is an abundant number, since it is smaller than the sum of its proper divisors (5875758).

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

3873618 is a wasteful number, since it uses less digits than its factorization.

3873618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519 (or 516 counting only the distinct ones).

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

The square root of 3873618 is about 1968.1509088482. The cubic root of 3873618 is about 157.0503577625.

It can be divided in two parts, 387 and 3618, that added together give a triangular number (4005 = T₈₉).

The spelling of 3873618 in words is "three million, eight hundred seventy-three thousand, six hundred eighteen".