18282187129 has 2 divisors, whose sum is σ = 18282187130. Its totient is φ = 18282187128.

The previous prime is 18282187117. The next prime is 18282187199. The reversal of 18282187129 is 92178128281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17101577529 + 1180609600 = 130773^2 + 34360^2 .

It is a cyclic number.

It is not a de Polignac number, because 18282187129 - 2¹⁵ = 18282154361 is a prime.

It is not a weakly prime, because it can be changed into another prime (18282187199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9141093564 + 9141093565.

It is an arithmetic number, because the mean of its divisors is an integer number (9141093565).

Almost surely, 2^18282187129 is an apocalyptic number.

It is an amenable number.

18282187129 is a deficient number, since it is larger than the sum of its proper divisors (1).

18282187129 is an equidigital number, since it uses as much as digits as its factorization.

18282187129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 258048, while the sum is 49.

The spelling of 18282187129 in words is "eighteen billion, two hundred eighty-two million, one hundred eighty-seven thousand, one hundred twenty-nine".