1885686668 has 12 divisors (see below), whose sum is σ = 3302205312. Its totient is φ = 942199440.

The previous prime is 1885686661. The next prime is 1885686683. The reversal of 1885686668 is 8666865881.

It is a self number, because there is not a number n which added to its sum of digits gives 1885686668.

It is not an unprimeable number, because it can be changed into a prime (1885686661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 154355 + ... + 166122.

It is an arithmetic number, because the mean of its divisors is an integer number (275183776).

Almost surely, 2^1885686668 is an apocalyptic number.

It is an amenable number.

1885686668 is a deficient number, since it is larger than the sum of its proper divisors (1416518644).

1885686668 is a wasteful number, since it uses less digits than its factorization.

1885686668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321952 (or 321950 counting only the distinct ones).

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

The square root of 1885686668 is about 43424.4938715467. The cubic root of 1885686668 is about 1235.4443194659. Note that the first 3 decimals are identical.

The spelling of 1885686668 in words is "one billion, eight hundred eighty-five million, six hundred eighty-six thousand, six hundred sixty-eight".