18868466843 has 2 divisors, whose sum is σ = 18868466844. Its totient is φ = 18868466842.

The previous prime is 18868466839. The next prime is 18868466899. The reversal of 18868466843 is 34866486881.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18868466843 - 2² = 18868466839 is a prime.

It is not a weakly prime, because it can be changed into another prime (18868466833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9434233421 + 9434233422.

It is an arithmetic number, because the mean of its divisors is an integer number (9434233422).

Almost surely, 2^18868466843 is an apocalyptic number.

18868466843 is a deficient number, since it is larger than the sum of its proper divisors (1).

18868466843 is an equidigital number, since it uses as much as digits as its factorization.

18868466843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42467328, while the sum is 62.

The spelling of 18868466843 in words is "eighteen billion, eight hundred sixty-eight million, four hundred sixty-six thousand, eight hundred forty-three".