1816445964343 has 2 divisors, whose sum is σ = 1816445964344. Its totient is φ = 1816445964342.

The previous prime is 1816445964337. The next prime is 1816445964449. The reversal of 1816445964343 is 3434695446181.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1816445964343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1816445964943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908222982171 + 908222982172.

It is an arithmetic number, because the mean of its divisors is an integer number (908222982172).

Almost surely, 2^{1816445964343} is an apocalyptic number.

1816445964343 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816445964343 is an equidigital number, since it uses as much as digits as its factorization.

1816445964343 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29859840, while the sum is 58.

The spelling of 1816445964343 in words is "one trillion, eight hundred sixteen billion, four hundred forty-five million, nine hundred sixty-four thousand, three hundred forty-three".