36318809 has 2 divisors, whose sum is σ = 36318810. Its totient is φ = 36318808.

The previous prime is 36318787. The next prime is 36318811. The reversal of 36318809 is 90881363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28590409 + 7728400 = 5347^2 + 2780^2 .

It is a cyclic number.

It is not a de Polignac number, because 36318809 - 2⁸ = 36318553 is a prime.

Together with 36318811, 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 (36318839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18159404 + 18159405.

It is an arithmetic number, because the mean of its divisors is an integer number (18159405).

Almost surely, 2^36318809 is an apocalyptic number.

It is an amenable number.

36318809 is a deficient number, since it is larger than the sum of its proper divisors (1).

36318809 is an equidigital number, since it uses as much as digits as its factorization.

36318809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 36318809 is about 6026.5088567097. The cubic root of 36318809 is about 331.1645692114.

The spelling of 36318809 in words is "thirty-six million, three hundred eighteen thousand, eight hundred nine".