1838404 has 12 divisors (see below), whose sum is σ = 3234924. Its totient is φ = 914144.

The previous prime is 1838401. The next prime is 1838407. The reversal of 1838404 is 4048381.

It is an interprime number because it is at equal distance from previous prime (1838401) and next prime (1838407).

It can be written as a sum of positive squares in 2 ways, for example, as 1345600 + 492804 = 1160^2 + 702^2 .

It is a pancake number, because a pancake can be divided into 1838404 parts by 1917 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (1838401) 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, 379 + ... + 1954.

It is an arithmetic number, because the mean of its divisors is an integer number (269577).

2^1838404 is an apocalyptic number.

It is an amenable number.

1838404 is a deficient number, since it is larger than the sum of its proper divisors (1396520).

1838404 is a wasteful number, since it uses less digits than its factorization.

1838404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2534 (or 2532 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 1838404 is about 1355.8775755945. The cubic root of 1838404 is about 122.5030736422.

The spelling of 1838404 in words is "one million, eight hundred thirty-eight thousand, four hundred four".