1604256534 has 24 divisors (see below), whose sum is σ = 3476993520. Its totient is φ = 534582288.

The previous prime is 1604256497. The next prime is 1604256547. The reversal of 1604256534 is 4356524061.

1604256534 is a `hidden beast` number, since 1 + 60 + 4 + 2 + 565 + 34 = 666.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 52572 + ... + 77280.

It is an arithmetic number, because the mean of its divisors is an integer number (144874730).

Almost surely, 2^1604256534 is an apocalyptic number.

1604256534 is an abundant number, since it is smaller than the sum of its proper divisors (1872736986).

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

1604256534 is a wasteful number, since it uses less digits than its factorization.

1604256534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28324 (or 28321 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 1604256534 is about 40053.1713351140. The cubic root of 1604256534 is about 1170.6433586355.

The spelling of 1604256534 in words is "one billion, six hundred four million, two hundred fifty-six thousand, five hundred thirty-four".