1604385896 has 16 divisors (see below), whose sum is σ = 3064983300. Its totient is φ = 787057024.

The previous prime is 1604385869. The next prime is 1604385899. The reversal of 1604385896 is 6985834061.

It can be written as a sum of positive squares in 2 ways, for example, as 1543389796 + 60996100 = 39286^2 + 7810^2 .

It is not an unprimeable number, because it can be changed into a prime (1604385899) 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, 1891541 + ... + 1892388.

Almost surely, 2^1604385896 is an apocalyptic number.

It is an amenable number.

1604385896 is a deficient number, since it is larger than the sum of its proper divisors (1460597404).

1604385896 is a wasteful number, since it uses less digits than its factorization.

1604385896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783988 (or 3783984 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 1604385896 is about 40054.7861809297. The cubic root of 1604385896 is about 1170.6748234070.

The spelling of 1604385896 in words is "one billion, six hundred four million, three hundred eighty-five thousand, eight hundred ninety-six".