1604309603 has 16 divisors (see below), whose sum is σ = 1778288736. Its totient is φ = 1437730560.

The previous prime is 1604309591. The next prime is 1604309627. The reversal of 1604309603 is 3069034061.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1604309603 - 2⁸ = 1604309347 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1604309603.

It is not an unprimeable number, because it can be changed into a prime (1604309683) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 232775 + ... + 239567.

It is an arithmetic number, because the mean of its divisors is an integer number (111143046).

Almost surely, 2^1604309603 is an apocalyptic number.

1604309603 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1604309603 is a deficient number, since it is larger than the sum of its proper divisors (173979133).

1604309603 is a wasteful number, since it uses less digits than its factorization.

1604309603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7334.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 1604309603 is about 40053.8338115092. The cubic root of 1604309603 is about 1170.6562668344.

The spelling of 1604309603 in words is "one billion, six hundred four million, three hundred nine thousand, six hundred three".