1806440204683 has 2 divisors, whose sum is σ = 1806440204684. Its totient is φ = 1806440204682.

The previous prime is 1806440204663. The next prime is 1806440204707. The reversal of 1806440204683 is 3864020446081.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1806440204683 - 2²¹ = 1806438107531 is a prime.

It is not a weakly prime, because it can be changed into another prime (1806440204663) 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, 903220102341 + 903220102342.

It is an arithmetic number, because the mean of its divisors is an integer number (903220102342).

Almost surely, 2^{1806440204683} is an apocalyptic number.

1806440204683 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806440204683 is an equidigital number, since it uses as much as digits as its factorization.

1806440204683 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 884736, while the sum is 46.

The spelling of 1806440204683 in words is "one trillion, eight hundred six billion, four hundred forty million, two hundred four thousand, six hundred eighty-three".