1804420799 has 4 divisors (see below), whose sum is σ = 1824695280. Its totient is φ = 1784146320.

The previous prime is 1804420781. The next prime is 1804420801. The reversal of 1804420799 is 9970244081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1804420799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804420399) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10137107 + ... + 10137284.

It is an arithmetic number, because the mean of its divisors is an integer number (456173820).

Almost surely, 2^1804420799 is an apocalyptic number.

1804420799 is a deficient number, since it is larger than the sum of its proper divisors (20274481).

1804420799 is an equidigital number, since it uses as much as digits as its factorization.

1804420799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20274480.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1804420799 is about 42478.4745371111. The cubic root of 1804420799 is about 1217.4354439304.

The spelling of 1804420799 in words is "one billion, eight hundred four million, four hundred twenty thousand, seven hundred ninety-nine".