169989168 has 20 divisors (see below), whose sum is σ = 439138808. Its totient is φ = 56663040.

The previous prime is 169989163. The next prime is 169989217. The reversal of 169989168 is 861989961.

169989168 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 (169989163) 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, 1770673 + ... + 1770768.

Almost surely, 2^169989168 is an apocalyptic number.

It is an amenable number.

169989168 is an abundant number, since it is smaller than the sum of its proper divisors (269149640).

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

169989168 is a wasteful number, since it uses less digits than its factorization.

169989168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541452 (or 3541446 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 57.

The square root of 169989168 is about 13037.9894155502. The cubic root of 169989168 is about 553.9540596259.

The spelling of 169989168 in words is "one hundred sixty-nine million, nine hundred eighty-nine thousand, one hundred sixty-eight".