18744430063 has 2 divisors, whose sum is σ = 18744430064. Its totient is φ = 18744430062.

The previous prime is 18744430057. The next prime is 18744430087. The reversal of 18744430063 is 36003444781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18744430063 - 2²⁹ = 18207559151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18744429998 and 18744430025.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18744430043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9372215031 + 9372215032.

It is an arithmetic number, because the mean of its divisors is an integer number (9372215032).

Almost surely, 2^18744430063 is an apocalyptic number.

18744430063 is a deficient number, since it is larger than the sum of its proper divisors (1).

18744430063 is an equidigital number, since it uses as much as digits as its factorization.

18744430063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 40.

The spelling of 18744430063 in words is "eighteen billion, seven hundred forty-four million, four hundred thirty thousand, sixty-three".