1585668668 has 12 divisors (see below), whose sum is σ = 2895569040. Its totient is φ = 758363232.

The previous prime is 1585668653. The next prime is 1585668677. The reversal of 1585668668 is 8668665851.

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, 8617673 + ... + 8617856.

It is an arithmetic number, because the mean of its divisors is an integer number (241297420).

Almost surely, 2^1585668668 is an apocalyptic number.

It is an amenable number.

1585668668 is a deficient number, since it is larger than the sum of its proper divisors (1309900372).

1585668668 is a wasteful number, since it uses less digits than its factorization.

1585668668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17235556 (or 17235554 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 59.

The square root of 1585668668 is about 39820.4553966928. The cubic root of 1585668668 is about 1166.1045276986.

The spelling of 1585668668 in words is "one billion, five hundred eighty-five million, six hundred sixty-eight thousand, six hundred sixty-eight".