1185855655163 has 2 divisors, whose sum is σ = 1185855655164. Its totient is φ = 1185855655162.

The previous prime is 1185855655157. The next prime is 1185855655181. The reversal of 1185855655163 is 3615565585811.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1185855655163 - 2⁴ = 1185855655147 is a prime.

It is not a weakly prime, because it can be changed into another prime (1185855655463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 592927827581 + 592927827582.

It is an arithmetic number, because the mean of its divisors is an integer number (592927827582).

Almost surely, 2^{1185855655163} is an apocalyptic number.

1185855655163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1185855655163 is an equidigital number, since it uses as much as digits as its factorization.

1185855655163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21600000, while the sum is 59.

The spelling of 1185855655163 in words is "one trillion, one hundred eighty-five billion, eight hundred fifty-five million, six hundred fifty-five thousand, one hundred sixty-three".