1668284874 has 12 divisors (see below), whose sum is σ = 3614617266. Its totient is φ = 556094952.

The previous prime is 1668284867. The next prime is 1668284887. The reversal of 1668284874 is 4784828661.

It can be written as a sum of positive squares in only one way, i.e., 844193025 + 824091849 = 29055^2 + 28707^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1668284874.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46341229 + ... + 46341264.

Almost surely, 2^1668284874 is an apocalyptic number.

1668284874 is an abundant number, since it is smaller than the sum of its proper divisors (1946332392).

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

1668284874 is a wasteful number, since it uses less digits than its factorization.

1668284874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92682501 (or 92682498 counting only the distinct ones).

The product of its digits is 4128768, while the sum is 54.

The square root of 1668284874 is about 40844.6431493776. The cubic root of 1668284874 is about 1186.0146967647.

The spelling of 1668284874 in words is "one billion, six hundred sixty-eight million, two hundred eighty-four thousand, eight hundred seventy-four".