36444637 has 2 divisors, whose sum is σ = 36444638. Its totient is φ = 36444636.

The previous prime is 36444589. The next prime is 36444643. The reversal of 36444637 is 73644463.

36444637 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35176761 + 1267876 = 5931^2 + 1126^2 .

It is an emirp because it is prime and its reverse (73644463) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36444637 - 2⁷ = 36444509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36444596 and 36444605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36424637) 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, 18222318 + 18222319.

It is an arithmetic number, because the mean of its divisors is an integer number (18222319).

Almost surely, 2^36444637 is an apocalyptic number.

It is an amenable number.

36444637 is a deficient number, since it is larger than the sum of its proper divisors (1).

36444637 is an equidigital number, since it uses as much as digits as its factorization.

36444637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 37.

The square root of 36444637 is about 6036.9393735568. The cubic root of 36444637 is about 331.5465727953.

It can be divided in two parts, 3644 and 4637, that added together give a square (8281 = 91²).

The spelling of 36444637 in words is "thirty-six million, four hundred forty-four thousand, six hundred thirty-seven".