18430764403 has 2 divisors, whose sum is σ = 18430764404. Its totient is φ = 18430764402.

The previous prime is 18430764367. The next prime is 18430764431. The reversal of 18430764403 is 30446703481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18430764403 - 2⁹ = 18430763891 is a prime.

It is not a weakly prime, because it can be changed into another prime (18430764433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215382201 + 9215382202.

It is an arithmetic number, because the mean of its divisors is an integer number (9215382202).

Almost surely, 2^18430764403 is an apocalyptic number.

18430764403 is a deficient number, since it is larger than the sum of its proper divisors (1).

18430764403 is an equidigital number, since it uses as much as digits as its factorization.

18430764403 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 18430764403 in words is "eighteen billion, four hundred thirty million, seven hundred sixty-four thousand, four hundred three".