1604309604 has 12 divisors (see below), whose sum is σ = 3743389104. Its totient is φ = 534769864.

The previous prime is 1604309591. The next prime is 1604309627. The reversal of 1604309604 is 4069034061.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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, 66846222 + ... + 66846245.

It is an arithmetic number, because the mean of its divisors is an integer number (311949092).

Almost surely, 2^1604309604 is an apocalyptic number.

It is an amenable number.

1604309604 is an abundant number, since it is smaller than the sum of its proper divisors (2139079500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1604309604 is a wasteful number, since it uses less digits than its factorization.

1604309604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133692474 (or 133692472 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 1604309604 is about 40053.8338239924. The cubic root of 1604309604 is about 1170.6562670777.

The spelling of 1604309604 in words is "one billion, six hundred four million, three hundred nine thousand, six hundred four".