1604002223 has 4 divisors (see below), whose sum is σ = 1604082360. Its totient is φ = 1603922088.

The previous prime is 1604002219. The next prime is 1604002247. The reversal of 1604002223 is 3222004061.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1604002223 - 2² = 1604002219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1604002195 and 1604002204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604004223) 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, 18233 + ... + 59501.

It is an arithmetic number, because the mean of its divisors is an integer number (401020590).

Almost surely, 2^1604002223 is an apocalyptic number.

1604002223 is a deficient number, since it is larger than the sum of its proper divisors (80137).

1604002223 is an equidigital number, since it uses as much as digits as its factorization.

1604002223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80136.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1604002223 is about 40049.9965418226. The cubic root of 1604002223 is about 1170.5814975367.

Adding to 1604002223 its reverse (3222004061), we get a palindrome (4826006284).

The spelling of 1604002223 in words is "one billion, six hundred four million, two thousand, two hundred twenty-three".