18463123429 has 2 divisors, whose sum is σ = 18463123430. Its totient is φ = 18463123428.

The previous prime is 18463123387. The next prime is 18463123457. The reversal of 18463123429 is 92432136481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16717972804 + 1745150625 = 129298^2 + 41775^2 .

It is a cyclic number.

It is not a de Polignac number, because 18463123429 - 2⁹ = 18463122917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18463123529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9231561714 + 9231561715.

It is an arithmetic number, because the mean of its divisors is an integer number (9231561715).

Almost surely, 2^18463123429 is an apocalyptic number.

It is an amenable number.

18463123429 is a deficient number, since it is larger than the sum of its proper divisors (1).

18463123429 is an equidigital number, since it uses as much as digits as its factorization.

18463123429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 43.

The spelling of 18463123429 in words is "eighteen billion, four hundred sixty-three million, one hundred twenty-three thousand, four hundred twenty-nine".