23436186209 has 2 divisors, whose sum is σ = 23436186210. Its totient is φ = 23436186208.

The previous prime is 23436186167. The next prime is 23436186287. The reversal of 23436186209 is 90268163432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21526758400 + 1909427809 = 146720^2 + 43697^2 .

It is a cyclic number.

It is not a de Polignac number, because 23436186209 - 2²⁴ = 23419408993 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23436186209.

It is not a weakly prime, because it can be changed into another prime (23436186289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11718093104 + 11718093105.

It is an arithmetic number, because the mean of its divisors is an integer number (11718093105).

Almost surely, 2^23436186209 is an apocalyptic number.

It is an amenable number.

23436186209 is a deficient number, since it is larger than the sum of its proper divisors (1).

23436186209 is an equidigital number, since it uses as much as digits as its factorization.

23436186209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 44.

The spelling of 23436186209 in words is "twenty-three billion, four hundred thirty-six million, one hundred eighty-six thousand, two hundred nine".