36243637 has 2 divisors, whose sum is σ = 36243638. Its totient is φ = 36243636.

The previous prime is 36243617. The next prime is 36243689. The reversal of 36243637 is 73634263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34503876 + 1739761 = 5874^2 + 1319^2 .

It is a cyclic number.

It is not a de Polignac number, because 36243637 - 2²³ = 27855029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36243617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18121818 + 18121819.

It is an arithmetic number, because the mean of its divisors is an integer number (18121819).

Almost surely, 2^36243637 is an apocalyptic number.

It is an amenable number.

36243637 is a deficient number, since it is larger than the sum of its proper divisors (1).

36243637 is an equidigital number, since it uses as much as digits as its factorization.

36243637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 34.

The square root of 36243637 is about 6020.2688478173. The cubic root of 36243637 is about 330.9359319596.

The spelling of 36243637 in words is "thirty-six million, two hundred forty-three thousand, six hundred thirty-seven".