16159689 has 32 divisors (see below), whose sum is σ = 29469440. Its totient is φ = 8522496.

The previous prime is 16159669. The next prime is 16159691. The reversal of 16159689 is 98695161.

It is not a de Polignac number, because 16159689 - 2¹⁵ = 16126921 is a prime.

It is a super-2 number, since 2×16159689² = 522271097153442, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16159609) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 832 + ... + 5745.

It is an arithmetic number, because the mean of its divisors is an integer number (920920).

Almost surely, 2^16159689 is an apocalyptic number.

It is an amenable number.

16159689 is a deficient number, since it is larger than the sum of its proper divisors (13309751).

16159689 is a wasteful number, since it uses less digits than its factorization.

16159689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6606 (or 6600 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 16159689 is about 4019.9115661915. The cubic root of 16159689 is about 252.8197511090.

The spelling of 16159689 in words is "sixteen million, one hundred fifty-nine thousand, six hundred eighty-nine".