1668182198 has 8 divisors (see below), whose sum is σ = 2504532960. Its totient is φ = 833337880.

The previous prime is 1668182179. The next prime is 1668182213. The reversal of 1668182198 is 8912818661.

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

It is a super-3 number, since 3×1668182198³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent 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, 373838 + ... + 378273.

It is an arithmetic number, because the mean of its divisors is an integer number (313066620).

Almost surely, 2^1668182198 is an apocalyptic number.

1668182198 is a deficient number, since it is larger than the sum of its proper divisors (836350762).

1668182198 is a wasteful number, since it uses less digits than its factorization.

1668182198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753222.

The product of its digits is 331776, while the sum is 50.

The square root of 1668182198 is about 40843.3862210273. The cubic root of 1668182198 is about 1185.9903648405.

The spelling of 1668182198 in words is "one billion, six hundred sixty-eight million, one hundred eighty-two thousand, one hundred ninety-eight".