2158169163 has 8 divisors (see below), whose sum is σ = 2913984000. Its totient is φ = 1420566888.

The previous prime is 2158169141. The next prime is 2158169173. The reversal of 2158169163 is 3619618512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2158169163 - 2¹² = 2158165067 is a prime.

It is a super-2 number, since 2×2158169163² = 9315388272248241138, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2158169173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4552863 + ... + 4553336.

It is an arithmetic number, because the mean of its divisors is an integer number (364248000).

Almost surely, 2^2158169163 is an apocalyptic number.

2158169163 is a deficient number, since it is larger than the sum of its proper divisors (755814837).

2158169163 is an equidigital number, since it uses as much as digits as its factorization.

2158169163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9106281.

The product of its digits is 77760, while the sum is 42.

The square root of 2158169163 is about 46456.0993089174. The cubic root of 2158169163 is about 1292.2954868236.

The spelling of 2158169163 in words is "two billion, one hundred fifty-eight million, one hundred sixty-nine thousand, one hundred sixty-three".