18281412559 has 2 divisors, whose sum is σ = 18281412560. Its totient is φ = 18281412558.

The previous prime is 18281412511. The next prime is 18281412581. The reversal of 18281412559 is 95521418281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18281412559 - 2⁷ = 18281412431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18281412509) 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, 9140706279 + 9140706280.

It is an arithmetic number, because the mean of its divisors is an integer number (9140706280).

Almost surely, 2^18281412559 is an apocalyptic number.

18281412559 is a deficient number, since it is larger than the sum of its proper divisors (1).

18281412559 is an equidigital number, since it uses as much as digits as its factorization.

18281412559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 230400, while the sum is 46.

The spelling of 18281412559 in words is "eighteen billion, two hundred eighty-one million, four hundred twelve thousand, five hundred fifty-nine".