18430764811 has 2 divisors, whose sum is σ = 18430764812. Its totient is φ = 18430764810.

The previous prime is 18430764797. The next prime is 18430764871. The reversal of 18430764811 is 11846703481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18430764811 - 2⁹ = 18430764299 is a prime.

It is not a weakly prime, because it can be changed into another prime (18430764871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9215382405 + 9215382406.

It is an arithmetic number, because the mean of its divisors is an integer number (9215382406).

Almost surely, 2^18430764811 is an apocalyptic number.

18430764811 is a deficient number, since it is larger than the sum of its proper divisors (1).

18430764811 is an equidigital number, since it uses as much as digits as its factorization.

18430764811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 18430764811 in words is "eighteen billion, four hundred thirty million, seven hundred sixty-four thousand, eight hundred eleven".