1668868338 has 8 divisors (see below), whose sum is σ = 3337736688. Its totient is φ = 556289444.

The previous prime is 1668868319. The next prime is 1668868351. The reversal of 1668868338 is 8338688661.

It is a happy number.

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

1668868338 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139072356 + ... + 139072367.

It is an arithmetic number, because the mean of its divisors is an integer number (417217086).

Almost surely, 2^1668868338 is an apocalyptic number.

1668868338 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.

1668868338 is a wasteful number, since it uses less digits than its factorization.

1668868338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278144728.

The product of its digits is 7962624, while the sum is 57.

The square root of 1668868338 is about 40851.7850038404. The cubic root of 1668868338 is about 1186.1529457798.

The spelling of 1668868338 in words is "one billion, six hundred sixty-eight million, eight hundred sixty-eight thousand, three hundred thirty-eight".