1668853372186 has 32 divisors (see below), whose sum is σ = 3361047355008. Its totient is φ = 600187026240.

The previous prime is 1668853372163. The next prime is 1668853372201. The reversal of 1668853372186 is 6812733588661.

It is a super-4 number, since 4×1668853372186⁴ (a number of 50 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 416794545 + ... + 416798548.

It is an arithmetic number, because the mean of its divisors is an integer number (105032729844).

Almost surely, 2^{1668853372186} is an apocalyptic number.

1668853372186 is an abundant number, since it is smaller than the sum of its proper divisors (1692193982822).

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

1668853372186 is a wasteful number, since it uses less digits than its factorization.

1668853372186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833593126.

The product of its digits is 69672960, while the sum is 64.

The spelling of 1668853372186 in words is "one trillion, six hundred sixty-eight billion, eight hundred fifty-three million, three hundred seventy-two thousand, one hundred eighty-six".