1804485605 has 8 divisors (see below), whose sum is σ = 2331950712. Its totient is φ = 1332543168.

The previous prime is 1804485593. The next prime is 1804485637. The reversal of 1804485605 is 5065844081.

It can be written as a sum of positive squares in 4 ways, for example, as 262666849 + 1541818756 = 16207^2 + 39266^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1804485605 - 2¹⁴ = 1804469221 is a prime.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 13880594 + ... + 13880723.

It is an arithmetic number, because the mean of its divisors is an integer number (291493839).

Almost surely, 2^1804485605 is an apocalyptic number.

It is an amenable number.

1804485605 is a deficient number, since it is larger than the sum of its proper divisors (527465107).

1804485605 is a wasteful number, since it uses less digits than its factorization.

1804485605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27761335.

The product of its (nonzero) digits is 153600, while the sum is 41.

The square root of 1804485605 is about 42479.2373401407. The cubic root of 1804485605 is about 1217.4500185383.

The spelling of 1804485605 in words is "one billion, eight hundred four million, four hundred eighty-five thousand, six hundred five".