18459603823 has 2 divisors, whose sum is σ = 18459603824. Its totient is φ = 18459603822.

The previous prime is 18459603803. The next prime is 18459603839. The reversal of 18459603823 is 32830695481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18459603823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18459603803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9229801911 + 9229801912.

It is an arithmetic number, because the mean of its divisors is an integer number (9229801912).

Almost surely, 2^18459603823 is an apocalyptic number.

18459603823 is a deficient number, since it is larger than the sum of its proper divisors (1).

18459603823 is an equidigital number, since it uses as much as digits as its factorization.

18459603823 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 49.

The spelling of 18459603823 in words is "eighteen billion, four hundred fifty-nine million, six hundred three thousand, eight hundred twenty-three".