169138156 has 24 divisors (see below), whose sum is σ = 325578960. Its totient is φ = 76878560.

The previous prime is 169138127. The next prime is 169138157. The reversal of 169138156 is 651831961.

169138156 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (169138157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10561 + ... + 21208.

It is an arithmetic number, because the mean of its divisors is an integer number (13565790).

Almost surely, 2^169138156 is an apocalyptic number.

It is an amenable number.

169138156 is a deficient number, since it is larger than the sum of its proper divisors (156440804).

169138156 is a wasteful number, since it uses less digits than its factorization.

169138156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31806 (or 31782 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 169138156 is about 13005.3126067773. The cubic root of 169138156 is about 553.0280978107.

The spelling of 169138156 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, one hundred fifty-six".