164281669169 has 4 divisors (see below), whose sum is σ = 164661072996. Its totient is φ = 163902265344.

The previous prime is 164281669159. The next prime is 164281669199. The reversal of 164281669169 is 961966182461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 961966182461 = 860759 ⋅1117579.

It can be written as a sum of positive squares in 2 ways, for example, as 37537125025 + 126744544144 = 193745^2 + 356012^2 .

It is a cyclic number.

It is not a de Polignac number, because 164281669169 - 2¹² = 164281665073 is a prime.

It is a super-2 number, since 2×164281669169² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164281669159) 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, 189701264 + ... + 189702129.

It is an arithmetic number, because the mean of its divisors is an integer number (41165268249).

Almost surely, 2^164281669169 is an apocalyptic number.

It is an amenable number.

164281669169 is a deficient number, since it is larger than the sum of its proper divisors (379403827).

164281669169 is an equidigital number, since it uses as much as digits as its factorization.

164281669169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379403826.

The product of its digits is 6718464, while the sum is 59.

The spelling of 164281669169 in words is "one hundred sixty-four billion, two hundred eighty-one million, six hundred sixty-nine thousand, one hundred sixty-nine".