1866050605163 has 2 divisors, whose sum is σ = 1866050605164. Its totient is φ = 1866050605162.

The previous prime is 1866050605103. The next prime is 1866050605183. The reversal of 1866050605163 is 3615060506681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1866050605163 - 2¹⁶ = 1866050539627 is a prime.

It is a super-2 number, since 2×1866050605163² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1866050605103) 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, 933025302581 + 933025302582.

It is an arithmetic number, because the mean of its divisors is an integer number (933025302582).

Almost surely, 2^{1866050605163} is an apocalyptic number.

1866050605163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1866050605163 is an equidigital number, since it uses as much as digits as its factorization.

1866050605163 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 47.

The spelling of 1866050605163 in words is "one trillion, eight hundred sixty-six billion, fifty million, six hundred five thousand, one hundred sixty-three".