169018832129 has 12 divisors (see below), whose sum is σ = 197457592644. Its totient is φ = 144251501184.

The previous prime is 169018832113. The next prime is 169018832141. The reversal of 169018832129 is 921238810961.

It can be written as a sum of positive squares in 2 ways, for example, as 90226342129 + 78792490000 = 300377^2 + 280700^2 .

It is not a de Polignac number, because 169018832129 - 2⁴ = 169018832113 is a prime.

It is a super-2 number, since 2×169018832129² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (169018832329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7390652 + ... + 7413485.

It is an arithmetic number, because the mean of its divisors is an integer number (16454799387).

Almost surely, 2^169018832129 is an apocalyptic number.

It is an amenable number.

169018832129 is a deficient number, since it is larger than the sum of its proper divisors (28438760515).

169018832129 is a wasteful number, since it uses less digits than its factorization.

169018832129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14804384 (or 14804377 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 50.

The spelling of 169018832129 in words is "one hundred sixty-nine billion, eighteen million, eight hundred thirty-two thousand, one hundred twenty-nine".