18417614443 has 2 divisors, whose sum is σ = 18417614444. Its totient is φ = 18417614442.

The previous prime is 18417614441. The next prime is 18417614447. The reversal of 18417614443 is 34441671481.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18417614443 - 2¹ = 18417614441 is a prime.

Together with 18417614441, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18417614443.

It is not a weakly prime, because it can be changed into another prime (18417614441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9208807221 + 9208807222.

It is an arithmetic number, because the mean of its divisors is an integer number (9208807222).

Almost surely, 2^18417614443 is an apocalyptic number.

18417614443 is a deficient number, since it is larger than the sum of its proper divisors (1).

18417614443 is an equidigital number, since it uses as much as digits as its factorization.

18417614443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 43.

The spelling of 18417614443 in words is "eighteen billion, four hundred seventeen million, six hundred fourteen thousand, four hundred forty-three".