1966669968 has 40 divisors (see below), whose sum is σ = 5085372928. Its totient is φ = 654936192.

The previous prime is 1966669933. The next prime is 1966669987. The reversal of 1966669968 is 8699666691.

It is a junction number, because it is equal to n+sod(n) for n = 1966669899 and 1966669908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33330 + ... + 71022.

Almost surely, 2^1966669968 is an apocalyptic number.

It is an amenable number.

1966669968 is an abundant number, since it is smaller than the sum of its proper divisors (3118702960).

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

1966669968 is a wasteful number, since it uses less digits than its factorization.

1966669968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38791 (or 38785 counting only the distinct ones).

The product of its digits is 45349632, while the sum is 66.

The square root of 1966669968 is about 44347.1528736626. The cubic root of 1966669968 is about 1252.8829389919.

The spelling of 1966669968 in words is "one billion, nine hundred sixty-six million, six hundred sixty-nine thousand, nine hundred sixty-eight".