1886668685 has 16 divisors (see below), whose sum is σ = 2471029632. Its totient is φ = 1371451200.

The previous prime is 1886668661. The next prime is 1886668723. The reversal of 1886668685 is 5868666881.

It is not a de Polignac number, because 1886668685 - 2⁶ = 1886668621 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123752 + ... + 138158.

It is an arithmetic number, because the mean of its divisors is an integer number (154439352).

Almost surely, 2^1886668685 is an apocalyptic number.

It is an amenable number.

1886668685 is a deficient number, since it is larger than the sum of its proper divisors (584360947).

1886668685 is a wasteful number, since it uses less digits than its factorization.

1886668685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16804.

The product of its digits is 26542080, while the sum is 62.

The square root of 1886668685 is about 43435.7995782281. The cubic root of 1886668685 is about 1235.6587447642.

The spelling of 1886668685 in words is "one billion, eight hundred eighty-six million, six hundred sixty-eight thousand, six hundred eighty-five".