1668244026 has 8 divisors (see below), whose sum is σ = 3336488064. Its totient is φ = 556081340.

The previous prime is 1668244009. The next prime is 1668244033. The reversal of 1668244026 is 6204428661.

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

1668244026 is an admirable number.

It is a Curzon 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, 139020330 + ... + 139020341.

It is an arithmetic number, because the mean of its divisors is an integer number (417061008).

Almost surely, 2^1668244026 is an apocalyptic number.

1668244026 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.

1668244026 is a wasteful number, since it uses less digits than its factorization.

1668244026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278040676.

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 1668244026 is about 40844.1431052238. The cubic root of 1668244026 is about 1186.0050168185.

The spelling of 1668244026 in words is "one billion, six hundred sixty-eight million, two hundred forty-four thousand, twenty-six".