1804513408 has 32 divisors (see below), whose sum is σ = 3605203260. Its totient is φ = 899678208.

The previous prime is 1804513397. The next prime is 1804513411. The reversal of 1804513408 is 8043154081.

It can be written as a sum of positive squares in 2 ways, for example, as 1764672064 + 39841344 = 42008^2 + 6312^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25216 + ... + 65152.

Almost surely, 2^1804513408 is an apocalyptic number.

It is an amenable number.

1804513408 is a deficient number, since it is larger than the sum of its proper divisors (1800689852).

1804513408 is an equidigital number, since it uses as much as digits as its factorization.

1804513408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40304 (or 40292 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1804513408 is about 42479.5645928722. The cubic root of 1804513408 is about 1217.4562712138.

Adding to 1804513408 its reverse (8043154081), we get a palindrome (9847667489).

The spelling of 1804513408 in words is "one billion, eight hundred four million, five hundred thirteen thousand, four hundred eight".