1668425852 has 12 divisors (see below), whose sum is σ = 2921740416. Its totient is φ = 833642880.

The previous prime is 1668425813. The next prime is 1668425873. The reversal of 1668425852 is 2585248661.

It is a junction number, because it is equal to n+sod(n) for n = 1668425797 and 1668425806.

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, 135893 + ... + 147660.

It is an arithmetic number, because the mean of its divisors is an integer number (243478368).

Almost surely, 2^1668425852 is an apocalyptic number.

It is an amenable number.

1668425852 is a deficient number, since it is larger than the sum of its proper divisors (1253314564).

1668425852 is a wasteful number, since it uses less digits than its factorization.

1668425852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285028 (or 285026 counting only the distinct ones).

The product of its digits is 921600, while the sum is 47.

The square root of 1668425852 is about 40846.3688961455. The cubic root of 1668425852 is about 1186.0481037831.

The spelling of 1668425852 in words is "one billion, six hundred sixty-eight million, four hundred twenty-five thousand, eight hundred fifty-two".