1604003105 has 4 divisors (see below), whose sum is σ = 1924803732. Its totient is φ = 1283202480.

The previous prime is 1604003033. The next prime is 1604003129. The reversal of 1604003105 is 5013004061.

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

It can be written as a sum of positive squares in 2 ways, for example, as 562069264 + 1041933841 = 23708^2 + 32279^2 .

It is not a de Polignac number, because 1604003105 - 2⁸ = 1604002849 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160400306 + ... + 160400315.

It is an arithmetic number, because the mean of its divisors is an integer number (481200933).

Almost surely, 2^1604003105 is an apocalyptic number.

It is an amenable number.

1604003105 is a deficient number, since it is larger than the sum of its proper divisors (320800627).

1604003105 is an equidigital number, since it uses as much as digits as its factorization.

1604003105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320800626.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1604003105 is about 40050.0075530580. The cubic root of 1604003105 is about 1170.5817120944.

Adding to 1604003105 its reverse (5013004061), we get a palindrome (6617007166).

The spelling of 1604003105 in words is "one billion, six hundred four million, three thousand, one hundred five".