1668673830 has 16 divisors (see below), whose sum is σ = 4004817264. Its totient is φ = 444979680.

The previous prime is 1668673819. The next prime is 1668673843. The reversal of 1668673830 is 383768661.

It is a self number, because there is not a number n which added to its sum of digits gives 1668673830.

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 7 ways as a sum of consecutive naturals, for example, 27811201 + ... + 27811260.

It is an arithmetic number, because the mean of its divisors is an integer number (250301079).

Almost surely, 2^1668673830 is an apocalyptic number.

1668673830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1668673830 is an abundant number, since it is smaller than the sum of its proper divisors (2336143434).

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

1668673830 is a wasteful number, since it uses less digits than its factorization.

1668673830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55622471.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 1668673830 is about 40849.4042796220. The cubic root of 1668673830 is about 1186.1068616169.

The spelling of 1668673830 in words is "one billion, six hundred sixty-eight million, six hundred seventy-three thousand, eight hundred thirty".