1604635544 has 16 divisors (see below), whose sum is σ = 3009383520. Its totient is φ = 802133280.

The previous prime is 1604635541. The next prime is 1604635603. The reversal of 1604635544 is 4455364061.

It is a junction number, because it is equal to n+sod(n) for n = 1604635498 and 1604635507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604635541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18257 + ... + 59519.

It is an arithmetic number, because the mean of its divisors is an integer number (188086470).

Almost surely, 2^1604635544 is an apocalyptic number.

It is an amenable number.

1604635544 is a deficient number, since it is larger than the sum of its proper divisors (1404747976).

1604635544 is a wasteful number, since it uses less digits than its factorization.

1604635544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46130 (or 46126 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 1604635544 is about 40057.9023914134. The cubic root of 1604635544 is about 1170.7355406097.

The spelling of 1604635544 in words is "one billion, six hundred four million, six hundred thirty-five thousand, five hundred forty-four".