18478860943 has 2 divisors, whose sum is σ = 18478860944. Its totient is φ = 18478860942.

The previous prime is 18478860899. The next prime is 18478861067. The reversal of 18478860943 is 34906887481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18478860943 - 2⁹ = 18478860431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18478860443) 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, 9239430471 + 9239430472.

It is an arithmetic number, because the mean of its divisors is an integer number (9239430472).

Almost surely, 2^18478860943 is an apocalyptic number.

18478860943 is a deficient number, since it is larger than the sum of its proper divisors (1).

18478860943 is an equidigital number, since it uses as much as digits as its factorization.

18478860943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9289728, while the sum is 58.

The spelling of 18478860943 in words is "eighteen billion, four hundred seventy-eight million, eight hundred sixty thousand, nine hundred forty-three".