1668330366 has 8 divisors (see below), whose sum is σ = 3336660744. Its totient is φ = 556110120.

The previous prime is 1668330353. The next prime is 1668330373. The reversal of 1668330366 is 6630338661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

1668330366 is an admirable 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, 139027525 + ... + 139027536.

It is an arithmetic number, because the mean of its divisors is an integer number (417082593).

Almost surely, 2^1668330366 is an apocalyptic number.

1668330366 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1668330366 is a wasteful number, since it uses less digits than its factorization.

1668330366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278055066.

The product of its (nonzero) digits is 279936, while the sum is 42.

The square root of 1668330366 is about 40845.2000362344. The cubic root of 1668330366 is about 1186.0254770359.

The spelling of 1668330366 in words is "one billion, six hundred sixty-eight million, three hundred thirty thousand, three hundred sixty-six".