18429389863 has 2 divisors, whose sum is σ = 18429389864. Its totient is φ = 18429389862.

The previous prime is 18429389843. The next prime is 18429389917. The reversal of 18429389863 is 36898392481.

It is a weak prime.

It is an emirp because it is prime and its reverse (36898392481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18429389863 - 2²⁹ = 17892518951 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18429389813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9214694931 + 9214694932.

It is an arithmetic number, because the mean of its divisors is an integer number (9214694932).

Almost surely, 2^18429389863 is an apocalyptic number.

18429389863 is a deficient number, since it is larger than the sum of its proper divisors (1).

18429389863 is an equidigital number, since it uses as much as digits as its factorization.

18429389863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17915904, while the sum is 61.

The spelling of 18429389863 in words is "eighteen billion, four hundred twenty-nine million, three hundred eighty-nine thousand, eight hundred sixty-three".