3688469189 has 2 divisors, whose sum is σ = 3688469190. Its totient is φ = 3688469188.

The previous prime is 3688469171. The next prime is 3688469231. The reversal of 3688469189 is 9819648863.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2578913089 + 1109556100 = 50783^2 + 33310^2 .

It is a cyclic number.

It is not a de Polignac number, because 3688469189 - 2⁸ = 3688468933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3688469119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1844234594 + 1844234595.

It is an arithmetic number, because the mean of its divisors is an integer number (1844234595).

Almost surely, 2^3688469189 is an apocalyptic number.

It is an amenable number.

3688469189 is a deficient number, since it is larger than the sum of its proper divisors (1).

3688469189 is an equidigital number, since it uses as much as digits as its factorization.

3688469189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 62.

The square root of 3688469189 is about 60732.7686591020. The cubic root of 3688469189 is about 1545.0719919813.

The spelling of 3688469189 in words is "three billion, six hundred eighty-eight million, four hundred sixty-nine thousand, one hundred eighty-nine".