169438163 has 4 divisors (see below), whose sum is σ = 171824688. Its totient is φ = 167051640.

The previous prime is 169438123. The next prime is 169438169. The reversal of 169438163 is 361834961.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 169438163 - 2²⁶ = 102329299 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169438163.

It is not an unprimeable number, because it can be changed into a prime (169438169) 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, 1193156 + ... + 1193297.

It is an arithmetic number, because the mean of its divisors is an integer number (42956172).

Almost surely, 2^169438163 is an apocalyptic number.

169438163 is a deficient number, since it is larger than the sum of its proper divisors (2386525).

169438163 is an equidigital number, since it uses as much as digits as its factorization.

169438163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386524.

The product of its digits is 93312, while the sum is 41.

The square root of 169438163 is about 13016.8415139772. The cubic root of 169438163 is about 553.3548805741.

The spelling of 169438163 in words is "one hundred sixty-nine million, four hundred thirty-eight thousand, one hundred sixty-three".