5636538437 has 2 divisors, whose sum is σ = 5636538438. Its totient is φ = 5636538436.

The previous prime is 5636538337. The next prime is 5636538463. The reversal of 5636538437 is 7348356365.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5162997316 + 473541121 = 71854^2 + 21761^2 .

It is a cyclic number.

It is not a de Polignac number, because 5636538437 - 2¹⁴ = 5636522053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5636538337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2818269218 + 2818269219.

It is an arithmetic number, because the mean of its divisors is an integer number (2818269219).

Almost surely, 2^5636538437 is an apocalyptic number.

It is an amenable number.

5636538437 is a deficient number, since it is larger than the sum of its proper divisors (1).

5636538437 is an equidigital number, since it uses as much as digits as its factorization.

5636538437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5443200, while the sum is 50.

The square root of 5636538437 is about 75076.8835061765. The cubic root of 5636538437 is about 1779.6618510329.

The spelling of 5636538437 in words is "five billion, six hundred thirty-six million, five hundred thirty-eight thousand, four hundred thirty-seven".