1604174656 has 28 divisors (see below), whose sum is σ = 3638039968. Its totient is φ = 687503232.

The previous prime is 1604174647. The next prime is 1604174657. The reversal of 1604174656 is 6564714061.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1604174657) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1789926 + ... + 1790821.

Almost surely, 2^1604174656 is an apocalyptic number.

1604174656 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1604174656 is an abundant number, since it is smaller than the sum of its proper divisors (2033865312).

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

1604174656 is an equidigital number, since it uses as much as digits as its factorization.

1604174656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580766 (or 3580756 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 1604174656 is about 40052.1492057542. The cubic root of 1604174656 is about 1170.6234425424.

The spelling of 1604174656 in words is "one billion, six hundred four million, one hundred seventy-four thousand, six hundred fifty-six".