1840238404 has 27 divisors (see below), whose sum is σ = 3270578871. Its totient is φ = 906005760.

The previous prime is 1840238353. The next prime is 1840238417. The reversal of 1840238404 is 4048320481.

It is a happy number.

The square root of 1840238404 is 42898.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 8398404 + 1831840000 = 2898^2 + 42800^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1840238404.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 7635724 + ... + 7635964.

Almost surely, 2^1840238404 is an apocalyptic number.

1840238404 is the 42898-th square number.

It is an amenable number.

1840238404 is a deficient number, since it is larger than the sum of its proper divisors (1430340467).

1840238404 is an frugal number, since it uses more digits than its factorization.

1840238404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 664 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 34.

The cubic root of 1840238404 is about 1225.4380560786.

Adding to 1840238404 its reverse (4048320481), we get a palindrome (5888558885).

The spelling of 1840238404 in words is "one billion, eight hundred forty million, two hundred thirty-eight thousand, four hundred four".