18448736843 has 2 divisors, whose sum is σ = 18448736844. Its totient is φ = 18448736842.

The previous prime is 18448736837. The next prime is 18448736857. The reversal of 18448736843 is 34863784481.

It is a weak prime.

It is an emirp because it is prime and its reverse (34863784481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18448736843 - 2¹⁰ = 18448735819 is a prime.

It is a super-2 number, since 2×18448736843² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18448736143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9224368421 + 9224368422.

It is an arithmetic number, because the mean of its divisors is an integer number (9224368422).

Almost surely, 2^18448736843 is an apocalyptic number.

18448736843 is a deficient number, since it is larger than the sum of its proper divisors (1).

18448736843 is an equidigital number, since it uses as much as digits as its factorization.

18448736843 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12386304, while the sum is 56.

The spelling of 18448736843 in words is "eighteen billion, four hundred forty-eight million, seven hundred thirty-six thousand, eight hundred forty-three".