1866683716 has 12 divisors (see below), whose sum is σ = 3379341420. Its totient is φ = 901157600.

The previous prime is 1866683659. The next prime is 1866683783. The reversal of 1866683716 is 6173866681.

It can be written as a sum of positive squares in 2 ways, for example, as 1509322500 + 357361216 = 38850^2 + 18904^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8045935 + ... + 8046166.

It is an arithmetic number, because the mean of its divisors is an integer number (281611785).

Almost surely, 2^1866683716 is an apocalyptic number.

It is an amenable number.

1866683716 is a deficient number, since it is larger than the sum of its proper divisors (1512657704).

1866683716 is a wasteful number, since it uses less digits than its factorization.

1866683716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16092134 (or 16092132 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 1866683716 is about 43205.1352966288. The cubic root of 1866683716 is about 1231.2802489378.

The spelling of 1866683716 in words is "one billion, eight hundred sixty-six million, six hundred eighty-three thousand, seven hundred sixteen".