18281755243 has 2 divisors, whose sum is σ = 18281755244. Its totient is φ = 18281755242.

The previous prime is 18281755211. The next prime is 18281755267. The reversal of 18281755243 is 34255718281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18281755243 - 2⁵ = 18281755211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18281755193 and 18281755202.

It is not a weakly prime, because it can be changed into another prime (18281755043) 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, 9140877621 + 9140877622.

It is an arithmetic number, because the mean of its divisors is an integer number (9140877622).

Almost surely, 2^18281755243 is an apocalyptic number.

18281755243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18281755243 is an equidigital number, since it uses as much as digits as its factorization.

18281755243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 537600, while the sum is 46.

The spelling of 18281755243 in words is "eighteen billion, two hundred eighty-one million, seven hundred fifty-five thousand, two hundred forty-three".