18768459823 has 2 divisors, whose sum is σ = 18768459824. Its totient is φ = 18768459822.

The previous prime is 18768459817. The next prime is 18768459847. The reversal of 18768459823 is 32895486781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18768459823 - 2⁵ = 18768459791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18768459803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9384229911 + 9384229912.

It is an arithmetic number, because the mean of its divisors is an integer number (9384229912).

Almost surely, 2^18768459823 is an apocalyptic number.

18768459823 is a deficient number, since it is larger than the sum of its proper divisors (1).

18768459823 is an equidigital number, since it uses as much as digits as its factorization.

18768459823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23224320, while the sum is 61.

The spelling of 18768459823 in words is "eighteen billion, seven hundred sixty-eight million, four hundred fifty-nine thousand, eight hundred twenty-three".