1866050605103 has 2 divisors, whose sum is σ = 1866050605104. Its totient is φ = 1866050605102.

The previous prime is 1866050605049. The next prime is 1866050605163. The reversal of 1866050605103 is 3015060506681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1866050605103 - 2¹⁰ = 1866050604079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1866050605163) 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, 933025302551 + 933025302552.

It is an arithmetic number, because the mean of its divisors is an integer number (933025302552).

Almost surely, 2^{1866050605103} is an apocalyptic number.

1866050605103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866050605103 is an equidigital number, since it uses as much as digits as its factorization.

1866050605103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 1866050605103 in words is "one trillion, eight hundred sixty-six billion, fifty million, six hundred five thousand, one hundred three".