1604654442 has 32 divisors (see below), whose sum is σ = 3571983360. Its totient is φ = 533972160.

The previous prime is 1604654417. The next prime is 1604654459. The reversal of 1604654442 is 2444564061.

1604654442 is a `hidden beast` number, since 1 + 604 + 6 + 5 + 4 + 4 + 42 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1604654397 and 1604654406.

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 15 ways as a sum of consecutive naturals, for example, 6967 + ... + 57077.

It is an arithmetic number, because the mean of its divisors is an integer number (111624480).

Almost surely, 2^1604654442 is an apocalyptic number.

1604654442 is an abundant number, since it is smaller than the sum of its proper divisors (1967328918).

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

1604654442 is a wasteful number, since it uses less digits than its factorization.

1604654442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50715 (or 50709 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 1604654442 is about 40058.1382742633. The cubic root of 1604654442 is about 1170.7401365595.

The spelling of 1604654442 in words is "one billion, six hundred four million, six hundred fifty-four thousand, four hundred forty-two".