3870686189 has 2 divisors, whose sum is σ = 3870686190. Its totient is φ = 3870686188.

The previous prime is 3870686179. The next prime is 3870686203. The reversal of 3870686189 is 9816860783.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3054441289 + 816244900 = 55267^2 + 28570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3870686189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3870686119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935343094 + 1935343095.

It is an arithmetic number, because the mean of its divisors is an integer number (1935343095).

Almost surely, 2^3870686189 is an apocalyptic number.

It is an amenable number.

3870686189 is a deficient number, since it is larger than the sum of its proper divisors (1).

3870686189 is an equidigital number, since it uses as much as digits as its factorization.

3870686189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The square root of 3870686189 is about 62214.8389775301. The cubic root of 3870686189 is about 1570.1072571997.

The spelling of 3870686189 in words is "three billion, eight hundred seventy million, six hundred eighty-six thousand, one hundred eighty-nine".