18036038233 has 2 divisors, whose sum is σ = 18036038234. Its totient is φ = 18036038232.

The previous prime is 18036038221. The next prime is 18036038257. The reversal of 18036038233 is 33283063081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9595573849 + 8440464384 = 97957^2 + 91872^2 .

It is an emirp because it is prime and its reverse (33283063081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18036038233 - 2¹⁷ = 18035907161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18036038192 and 18036038201.

It is not a weakly prime, because it can be changed into another prime (18030038233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9018019116 + 9018019117.

It is an arithmetic number, because the mean of its divisors is an integer number (9018019117).

Almost surely, 2^18036038233 is an apocalyptic number.

It is an amenable number.

18036038233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18036038233 is an equidigital number, since it uses as much as digits as its factorization.

18036038233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 18036038233 in words is "eighteen billion, thirty-six million, thirty-eight thousand, two hundred thirty-three".