1804406788 has 12 divisors (see below), whose sum is σ = 3158147020. Its totient is φ = 902079072.

The previous prime is 1804406771. The next prime is 1804406789. The reversal of 1804406788 is 8876044081.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1419933124 + 384473664 = 37682^2 + 19608^2 .

It is not an unprimeable number, because it can be changed into a prime (1804406789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6670 + ... + 60442.

Almost surely, 2^1804406788 is an apocalyptic number.

It is an amenable number.

1804406788 is a deficient number, since it is larger than the sum of its proper divisors (1353740232).

1804406788 is a wasteful number, since it uses less digits than its factorization.

1804406788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62166 (or 62164 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 46.

The square root of 1804406788 is about 42478.3096179686. The cubic root of 1804406788 is about 1217.4322928671.

The spelling of 1804406788 in words is "one billion, eight hundred four million, four hundred six thousand, seven hundred eighty-eight".