18463463423 has 2 divisors, whose sum is σ = 18463463424. Its totient is φ = 18463463422.

The previous prime is 18463463401. The next prime is 18463463443. The reversal of 18463463423 is 32436436481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18463463423 - 2¹² = 18463459327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18463463443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9231731711 + 9231731712.

It is an arithmetic number, because the mean of its divisors is an integer number (9231731712).

Almost surely, 2^18463463423 is an apocalyptic number.

18463463423 is a deficient number, since it is larger than the sum of its proper divisors (1).

18463463423 is an equidigital number, since it uses as much as digits as its factorization.

18463463423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 44.

The spelling of 18463463423 in words is "eighteen billion, four hundred sixty-three million, four hundred sixty-three thousand, four hundred twenty-three".