18222611009 has 2 divisors, whose sum is σ = 18222611010. Its totient is φ = 18222611008.

The previous prime is 18222610961. The next prime is 18222611039. The reversal of 18222611009 is 90011622281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12423331600 + 5799279409 = 111460^2 + 76153^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18222611009 is a prime.

It is not a weakly prime, because it can be changed into another prime (18222611039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9111305504 + 9111305505.

It is an arithmetic number, because the mean of its divisors is an integer number (9111305505).

Almost surely, 2^18222611009 is an apocalyptic number.

It is an amenable number.

18222611009 is a deficient number, since it is larger than the sum of its proper divisors (1).

18222611009 is an equidigital number, since it uses as much as digits as its factorization.

18222611009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 32.

The spelling of 18222611009 in words is "eighteen billion, two hundred twenty-two million, six hundred eleven thousand, nine".