18518501850227 has 2 divisors, whose sum is σ = 18518501850228. Its totient is φ = 18518501850226.

The previous prime is 18518501850127. The next prime is 18518501850263. The reversal of 18518501850227 is 72205810581581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18518501850227 - 2¹⁶ = 18518501784691 is a prime.

It is not a weakly prime, because it can be changed into another prime (18518501850127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9259250925113 + 9259250925114.

It is an arithmetic number, because the mean of its divisors is an integer number (9259250925114).

Almost surely, 2^{18518501850227} is an apocalyptic number.

18518501850227 is a deficient number, since it is larger than the sum of its proper divisors (1).

18518501850227 is an equidigital number, since it uses as much as digits as its factorization.

18518501850227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792000, while the sum is 53.

The spelling of 18518501850227 in words is "eighteen trillion, five hundred eighteen billion, five hundred one million, eight hundred fifty thousand, two hundred twenty-seven".