3645129569 has 2 divisors, whose sum is σ = 3645129570. Its totient is φ = 3645129568.

The previous prime is 3645129547. The next prime is 3645129601. The reversal of 3645129569 is 9659215463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3420729169 + 224400400 = 58487^2 + 14980^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645129569 is a prime.

It is a super-2 number, since 2×3645129569² = 26573939149596251522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3645129869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822564784 + 1822564785.

It is an arithmetic number, because the mean of its divisors is an integer number (1822564785).

Almost surely, 2^3645129569 is an apocalyptic number.

It is an amenable number.

3645129569 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645129569 is an equidigital number, since it uses as much as digits as its factorization.

3645129569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1749600, while the sum is 50.

The square root of 3645129569 is about 60374.9084388540. The cubic root of 3645129569 is about 1538.9965871735.

The spelling of 3645129569 in words is "three billion, six hundred forty-five million, one hundred twenty-nine thousand, five hundred sixty-nine".