1840040404 has 12 divisors (see below), whose sum is σ = 3227408800. Its totient is φ = 917923608.

The previous prime is 1840040383. The next prime is 1840040443. The reversal of 1840040404 is 4040400481.

It is a happy number.

1840040404 is a modest number, since divided by 40404 gives 1840 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 522174 + ... + 525685.

Almost surely, 2^1840040404 is an apocalyptic number.

It is an amenable number.

1840040404 is a deficient number, since it is larger than the sum of its proper divisors (1387368396).

1840040404 is a wasteful number, since it uses less digits than its factorization.

1840040404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048302 (or 1048300 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 1840040404 is about 42895.6921380224. The cubic root of 1840040404 is about 1225.3941042664.

Adding to 1840040404 its reverse (4040400481), we get a palindrome (5880440885).

The spelling of 1840040404 in words is "one billion, eight hundred forty million, forty thousand, four hundred four".