18755285243 has 2 divisors, whose sum is σ = 18755285244. Its totient is φ = 18755285242.

The previous prime is 18755285239. The next prime is 18755285249. The reversal of 18755285243 is 34258255781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18755285243 - 2² = 18755285239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18755285191 and 18755285200.

It is not a weakly prime, because it can be changed into another prime (18755285249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9377642621 + 9377642622.

It is an arithmetic number, because the mean of its divisors is an integer number (9377642622).

Almost surely, 2^18755285243 is an apocalyptic number.

18755285243 is a deficient number, since it is larger than the sum of its proper divisors (1).

18755285243 is an equidigital number, since it uses as much as digits as its factorization.

18755285243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688000, while the sum is 50.

The spelling of 18755285243 in words is "eighteen billion, seven hundred fifty-five million, two hundred eighty-five thousand, two hundred forty-three".