3699565549 has 2 divisors, whose sum is σ = 3699565550. Its totient is φ = 3699565548.

The previous prime is 3699565543. The next prime is 3699565577. The reversal of 3699565549 is 9455659963.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3596400900 + 103164649 = 59970^2 + 10157^2 .

It is a cyclic number.

It is not a de Polignac number, because 3699565549 - 2²⁵ = 3666011117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3699565543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1849782774 + 1849782775.

It is an arithmetic number, because the mean of its divisors is an integer number (1849782775).

Almost surely, 2^3699565549 is an apocalyptic number.

It is an amenable number.

3699565549 is a deficient number, since it is larger than the sum of its proper divisors (1).

3699565549 is an equidigital number, since it uses as much as digits as its factorization.

3699565549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39366000, while the sum is 61.

The square root of 3699565549 is about 60824.0540329235. The cubic root of 3699565549 is about 1546.6198347507.

The spelling of 3699565549 in words is "three billion, six hundred ninety-nine million, five hundred sixty-five thousand, five hundred forty-nine".