18805111334 has 4 divisors (see below), whose sum is σ = 28207667004. Its totient is φ = 9402555666.

The previous prime is 18805111331. The next prime is 18805111363. The reversal of 18805111334 is 43311150881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43311150881 = 43 ⋅1007236067.

It is a junction number, because it is equal to n+sod(n) for n = 18805111294 and 18805111303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18805111331) 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, 4701277832 + ... + 4701277835.

It is an arithmetic number, because the mean of its divisors is an integer number (7051916751).

Almost surely, 2^18805111334 is an apocalyptic number.

18805111334 is a deficient number, since it is larger than the sum of its proper divisors (9402555670).

18805111334 is an equidigital number, since it uses as much as digits as its factorization.

18805111334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402555669.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 18805111334 in words is "eighteen billion, eight hundred five million, one hundred eleven thousand, three hundred thirty-four".