1668457489306 has 8 divisors (see below), whose sum is σ = 2502789933024. Its totient is φ = 834194178300.

The previous prime is 1668457489289. The next prime is 1668457489319. The reversal of 1668457489306 is 6039847548661.

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

It is a super-2 number, since 2×1668457489306² (a number of 25 digits) contains 22 as substring.

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, 17222800 + ... + 17319403.

It is an arithmetic number, because the mean of its divisors is an integer number (312848741628).

Almost surely, 2^{1668457489306} is an apocalyptic number.

1668457489306 is a deficient number, since it is larger than the sum of its proper divisors (834332443718).

1668457489306 is a wasteful number, since it uses less digits than its factorization.

1668457489306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34566356.

The product of its (nonzero) digits is 209018880, while the sum is 67.

The spelling of 1668457489306 in words is "one trillion, six hundred sixty-eight billion, four hundred fifty-seven million, four hundred eighty-nine thousand, three hundred six".