1604653256 has 64 divisors (see below), whose sum is σ = 3239034480. Its totient is φ = 742604800.

The previous prime is 1604653247. The next prime is 1604653289. The reversal of 1604653256 is 6523564061.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1602721156 + 1932100 = 40034^2 + 1390^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2705696 + ... + 2706288.

Almost surely, 2^1604653256 is an apocalyptic number.

It is an amenable number.

1604653256 is an abundant number, since it is smaller than the sum of its proper divisors (1634381224).

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

1604653256 is a wasteful number, since it uses less digits than its factorization.

1604653256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914 (or 910 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 38.

The square root of 1604653256 is about 40058.1234707768. The cubic root of 1604653256 is about 1170.7398481282.

The spelling of 1604653256 in words is "one billion, six hundred four million, six hundred fifty-three thousand, two hundred fifty-six".