1818826682443 has 2 divisors, whose sum is σ = 1818826682444. Its totient is φ = 1818826682442.

The previous prime is 1818826682383. The next prime is 1818826682447. The reversal of 1818826682443 is 3442866288181.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818826682443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1818826682447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909413341221 + 909413341222.

It is an arithmetic number, because the mean of its divisors is an integer number (909413341222).

Almost surely, 2^{1818826682443} is an apocalyptic number.

1818826682443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818826682443 is an equidigital number, since it uses as much as digits as its factorization.

1818826682443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28311552, while the sum is 61.

The spelling of 1818826682443 in words is "one trillion, eight hundred eighteen billion, eight hundred twenty-six million, six hundred eighty-two thousand, four hundred forty-three".