1668868522 has 8 divisors (see below), whose sum is σ = 2534990400. Its totient is φ = 823871724.

The previous prime is 1668868517. The next prime is 1668868541. The reversal of 1668868522 is 2258688661.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1668868522.

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, 5281072 + ... + 5281387.

It is an arithmetic number, because the mean of its divisors is an integer number (316873800).

Almost surely, 2^1668868522 is an apocalyptic number.

1668868522 is a deficient number, since it is larger than the sum of its proper divisors (866121878).

1668868522 is a wasteful number, since it uses less digits than its factorization.

1668868522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10562540.

The product of its digits is 2211840, while the sum is 52.

The square root of 1668868522 is about 40851.7872558839. The cubic root of 1668868522 is about 1186.1529893726.

It can be divided in two parts, 166 and 8868522, that added together give a palindrome (8868688).

The spelling of 1668868522 in words is "one billion, six hundred sixty-eight million, eight hundred sixty-eight thousand, five hundred twenty-two".