1938904 has 24 divisors (see below), whose sum is σ = 3997980. Its totient is φ = 880880.

The previous prime is 1938889. The next prime is 1938907. The reversal of 1938904 is 4098391.

It is a self number, because there is not a number n which added to its sum of digits gives 1938904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1938907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34 + ... + 1969.

2^1938904 is an apocalyptic number.

It is an amenable number.

1938904 is an abundant number, since it is smaller than the sum of its proper divisors (2059076).

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

1938904 is a wasteful number, since it uses less digits than its factorization.

1938904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031 (or 2016 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1938904 is about 1392.4453310633. The cubic root of 1938904 is about 124.6958793518.

The spelling of 1938904 in words is "one million, nine hundred thirty-eight thousand, nine hundred four".