1608904628 has 12 divisors (see below), whose sum is σ = 2821667520. Its totient is φ = 802713912.

The previous prime is 1608904613. The next prime is 1608904639. The reversal of 1608904628 is 8264098061.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 432518 + ... + 436221.

It is an arithmetic number, because the mean of its divisors is an integer number (235138960).

Almost surely, 2^1608904628 is an apocalyptic number.

It is an amenable number.

1608904628 is a deficient number, since it is larger than the sum of its proper divisors (1212762892).

1608904628 is a wasteful number, since it uses less digits than its factorization.

1608904628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869206 (or 869204 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 1608904628 is about 40111.1534114889. The cubic root of 1608904628 is about 1171.7728566550.

The spelling of 1608904628 in words is "one billion, six hundred eight million, nine hundred four thousand, six hundred twenty-eight".