3821918 has 8 divisors (see below), whose sum is σ = 5788848. Its totient is φ = 1892304.

The previous prime is 3821911. The next prime is 3821929. The reversal of 3821918 is 8191283.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9071 + ... + 9482.

It is an arithmetic number, because the mean of its divisors is an integer number (723606).

Almost surely, 2^3821918 is an apocalyptic number.

3821918 is a deficient number, since it is larger than the sum of its proper divisors (1966930).

3821918 is a wasteful number, since it uses less digits than its factorization.

3821918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18658.

The product of its digits is 3456, while the sum is 32.

The square root of 3821918 is about 1954.9726340796. The cubic root of 3821918 is about 156.3485249544.

The spelling of 3821918 in words is "three million, eight hundred twenty-one thousand, nine hundred eighteen".