169138116 has 72 divisors (see below), whose sum is σ = 496676544. Its totient is φ = 47528640.

The previous prime is 169138111. The next prime is 169138127. The reversal of 169138116 is 611831961.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (169138111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9871 + ... + 20873.

Almost surely, 2^169138116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 169138116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (248338272).

169138116 is an abundant number, since it is smaller than the sum of its proper divisors (327538428).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

169138116 is a wasteful number, since it uses less digits than its factorization.

169138116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11081 (or 11076 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 169138116 is about 13005.3110689441. The cubic root of 169138116 is about 553.0280542150.

The spelling of 169138116 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, one hundred sixteen".