18735234823 has 2 divisors, whose sum is σ = 18735234824. Its totient is φ = 18735234822.

The previous prime is 18735234811. The next prime is 18735234839. The reversal of 18735234823 is 32843253781.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18735234823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18735234883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9367617411 + 9367617412.

It is an arithmetic number, because the mean of its divisors is an integer number (9367617412).

Almost surely, 2^18735234823 is an apocalyptic number.

18735234823 is a deficient number, since it is larger than the sum of its proper divisors (1).

18735234823 is an equidigital number, since it uses as much as digits as its factorization.

18735234823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The spelling of 18735234823 in words is "eighteen billion, seven hundred thirty-five million, two hundred thirty-four thousand, eight hundred twenty-three".