18548889323 has 2 divisors, whose sum is σ = 18548889324. Its totient is φ = 18548889322.

The previous prime is 18548889221. The next prime is 18548889347. The reversal of 18548889323 is 32398884581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18548889323 - 2²⁰ = 18547840747 is a prime.

It is a super-2 number, since 2×18548889323² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18548889353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9274444661 + 9274444662.

It is an arithmetic number, because the mean of its divisors is an integer number (9274444662).

Almost surely, 2^18548889323 is an apocalyptic number.

18548889323 is a deficient number, since it is larger than the sum of its proper divisors (1).

18548889323 is an equidigital number, since it uses as much as digits as its factorization.

18548889323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13271040, while the sum is 59.

The spelling of 18548889323 in words is "eighteen billion, five hundred forty-eight million, eight hundred eighty-nine thousand, three hundred twenty-three".