168169169 has 8 divisors (see below), whose sum is σ = 200549760. Its totient is φ = 137877696.

The previous prime is 168169147. The next prime is 168169187. The reversal of 168169169 is 961961861.

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

It is a cyclic number.

It is not a de Polignac number, because 168169169 - 2²⁰ = 167120593 is a prime.

It is a super-2 number, since 2×168169169² = 56561738804301122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168169139) 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, 522104 + ... + 522425.

It is an arithmetic number, because the mean of its divisors is an integer number (25068720).

Almost surely, 2^168169169 is an apocalyptic number.

It is an amenable number.

168169169 is a deficient number, since it is larger than the sum of its proper divisors (32380591).

168169169 is a wasteful number, since it uses less digits than its factorization.

168169169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1044559.

The product of its digits is 139968, while the sum is 47.

The square root of 168169169 is about 12968.0055906836. The cubic root of 168169169 is about 551.9699812581.

It can be divided in two parts, 1681 and 69169, that multiplied together give a square (116273089 = 10783²).

The spelling of 168169169 in words is "one hundred sixty-eight million, one hundred sixty-nine thousand, one hundred sixty-nine".