169138712 has 48 divisors (see below), whose sum is σ = 343695960. Its totient is φ = 77762816.

The previous prime is 169138699. The next prime is 169138771. The reversal of 169138712 is 217831961.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 300143 + ... + 300705.

Almost surely, 2^169138712 is an apocalyptic number.

It is an amenable number.

169138712 is an abundant number, since it is smaller than the sum of its proper divisors (174557248).

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

169138712 is a wasteful number, since it uses less digits than its factorization.

169138712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 629 counting only the distinct ones).

The product of its digits is 18144, while the sum is 38.

The square root of 169138712 is about 13005.3339826396. Note that the first 3 decimals coincide. The cubic root of 169138712 is about 553.0287037913.

The spelling of 169138712 in words is "one hundred sixty-nine million, one hundred thirty-eight thousand, seven hundred twelve".