36113809 has 2 divisors, whose sum is σ = 36113810. Its totient is φ = 36113808.

The previous prime is 36113807. The next prime is 36113821. The reversal of 36113809 is 90831163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24059025 + 12054784 = 4905^2 + 3472^2 .

It is a cyclic number.

It is not a de Polignac number, because 36113809 - 2¹ = 36113807 is a prime.

Together with 36113807, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36113807) 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, 18056904 + 18056905.

It is an arithmetic number, because the mean of its divisors is an integer number (18056905).

Almost surely, 2^36113809 is an apocalyptic number.

It is an amenable number.

36113809 is a deficient number, since it is larger than the sum of its proper divisors (1).

36113809 is an equidigital number, since it uses as much as digits as its factorization.

36113809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 36113809 is about 6009.4765995052. The cubic root of 36113809 is about 330.5403116771.

The spelling of 36113809 in words is "thirty-six million, one hundred thirteen thousand, eight hundred nine".