18254400559 has 2 divisors, whose sum is σ = 18254400560. Its totient is φ = 18254400558.

The previous prime is 18254400557. The next prime is 18254400583. The reversal of 18254400559 is 95500445281.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18254400559 - 2¹ = 18254400557 is a prime.

Together with 18254400557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18254400553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9127200279 + 9127200280.

It is an arithmetic number, because the mean of its divisors is an integer number (9127200280).

Almost surely, 2^18254400559 is an apocalyptic number.

18254400559 is a deficient number, since it is larger than the sum of its proper divisors (1).

18254400559 is an equidigital number, since it uses as much as digits as its factorization.

18254400559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 18254400559 in words is "eighteen billion, two hundred fifty-four million, four hundred thousand, five hundred fifty-nine".