2168404163 has 4 divisors (see below), whose sum is σ = 2168508720. Its totient is φ = 2168299608.

The previous prime is 2168404141. The next prime is 2168404169. The reversal of 2168404163 is 3614048612.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2168404163 - 2²⁰ = 2167355587 is a prime.

It is a super-2 number, since 2×2168404163² = 9403953228231461138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168404169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9503 + ... + 66536.

It is an arithmetic number, because the mean of its divisors is an integer number (542127180).

Almost surely, 2^2168404163 is an apocalyptic number.

2168404163 is a deficient number, since it is larger than the sum of its proper divisors (104557).

2168404163 is an equidigital number, since it uses as much as digits as its factorization.

2168404163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104556.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 2168404163 is about 46566.1267768751. The cubic root of 2168404163 is about 1294.3351462670.

The spelling of 2168404163 in words is "two billion, one hundred sixty-eight million, four hundred four thousand, one hundred sixty-three".