18814585123 has 2 divisors, whose sum is σ = 18814585124. Its totient is φ = 18814585122.

The previous prime is 18814585109. The next prime is 18814585133. The reversal of 18814585123 is 32158541881.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18814585123 - 2⁵ = 18814585091 is a prime.

It is a super-2 number, since 2×18814585123² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18814585133) 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, 9407292561 + 9407292562.

It is an arithmetic number, because the mean of its divisors is an integer number (9407292562).

Almost surely, 2^18814585123 is an apocalyptic number.

18814585123 is a deficient number, since it is larger than the sum of its proper divisors (1).

18814585123 is an equidigital number, since it uses as much as digits as its factorization.

18814585123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 307200, while the sum is 46.

The spelling of 18814585123 in words is "eighteen billion, eight hundred fourteen million, five hundred eighty-five thousand, one hundred twenty-three".