18032832217 has 2 divisors, whose sum is σ = 18032832218. Its totient is φ = 18032832216.

The previous prime is 18032832199. The next prime is 18032832253. The reversal of 18032832217 is 71223823081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17759293696 + 273538521 = 133264^2 + 16539^2 .

It is an emirp because it is prime and its reverse (71223823081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18032832217 - 2⁷ = 18032832089 is a prime.

It is not a weakly prime, because it can be changed into another prime (18032832617) 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, 9016416108 + 9016416109.

It is an arithmetic number, because the mean of its divisors is an integer number (9016416109).

Almost surely, 2^18032832217 is an apocalyptic number.

It is an amenable number.

18032832217 is a deficient number, since it is larger than the sum of its proper divisors (1).

18032832217 is an equidigital number, since it uses as much as digits as its factorization.

18032832217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 37.

The spelling of 18032832217 in words is "eighteen billion, thirty-two million, eight hundred thirty-two thousand, two hundred seventeen".