18334185811 has 2 divisors, whose sum is σ = 18334185812. Its totient is φ = 18334185810.

The previous prime is 18334185781. The next prime is 18334185829. The reversal of 18334185811 is 11858143381.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18334185811 - 2³³ = 9744251219 is a prime.

It is a super-2 number, since 2×18334185811² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18334185841) 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, 9167092905 + 9167092906.

It is an arithmetic number, because the mean of its divisors is an integer number (9167092906).

Almost surely, 2^18334185811 is an apocalyptic number.

18334185811 is a deficient number, since it is larger than the sum of its proper divisors (1).

18334185811 is an equidigital number, since it uses as much as digits as its factorization.

18334185811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92160, while the sum is 43.

The spelling of 18334185811 in words is "eighteen billion, three hundred thirty-four million, one hundred eighty-five thousand, eight hundred eleven".