38636569 has 2 divisors, whose sum is σ = 38636570. Its totient is φ = 38636568.

The previous prime is 38636561. The next prime is 38636581. The reversal of 38636569 is 96563683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27825625 + 10810944 = 5275^2 + 3288^2 .

It is a cyclic number.

It is not a de Polignac number, because 38636569 - 2³ = 38636561 is a prime.

It is a super-2 number, since 2×38636569² = 2985568928183522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38636561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19318284 + 19318285.

It is an arithmetic number, because the mean of its divisors is an integer number (19318285).

Almost surely, 2^38636569 is an apocalyptic number.

It is an amenable number.

38636569 is a deficient number, since it is larger than the sum of its proper divisors (1).

38636569 is an equidigital number, since it uses as much as digits as its factorization.

38636569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 699840, while the sum is 46.

The square root of 38636569 is about 6215.8321245027. The cubic root of 38636569 is about 338.0644608218.

The spelling of 38636569 in words is "thirty-eight million, six hundred thirty-six thousand, five hundred sixty-nine".