1938684 has 48 divisors (see below), whose sum is σ = 5201280. Its totient is φ = 555840.

The previous prime is 1938659. The next prime is 1938701. The reversal of 1938684 is 4868391.

It is a congruent number.

It is an unprimeable number.

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, 2122 + ... + 2894.

It is an arithmetic number, because the mean of its divisors is an integer number (108360).

2^1938684 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1938684, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2600640).

1938684 is an abundant number, since it is smaller than the sum of its proper divisors (3262596).

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

1938684 is a wasteful number, since it uses less digits than its factorization.

1938684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 808 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 1938684 is about 1392.3663311069. The cubic root of 1938684 is about 124.6911629190.

The spelling of 1938684 in words is "one million, nine hundred thirty-eight thousand, six hundred eighty-four".