2186472689 has 2 divisors, whose sum is σ = 2186472690. Its totient is φ = 2186472688.

The previous prime is 2186472679. The next prime is 2186472703. The reversal of 2186472689 is 9862746812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2151568225 + 34904464 = 46385^2 + 5908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2186472689 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2186472689.

It is not a weakly prime, because it can be changed into another prime (2186472679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093236344 + 1093236345.

It is an arithmetic number, because the mean of its divisors is an integer number (1093236345).

Almost surely, 2^2186472689 is an apocalyptic number.

It is an amenable number.

2186472689 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186472689 is an equidigital number, since it uses as much as digits as its factorization.

2186472689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 53.

The square root of 2186472689 is about 46759.7336284115. The cubic root of 2186472689 is about 1297.9202819743.

The spelling of 2186472689 in words is "two billion, one hundred eighty-six million, four hundred seventy-two thousand, six hundred eighty-nine".