159891216 has 40 divisors (see below), whose sum is σ = 431014080. Its totient is φ = 50979456.

The previous prime is 159891203. The next prime is 159891217. The reversal of 159891216 is 612198951.

159891216 is digitally balanced in base 2, 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 (159891217) 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, 71311 + ... + 73518.

It is an arithmetic number, because the mean of its divisors is an integer number (10775352).

Almost surely, 2^159891216 is an apocalyptic number.

159891216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

159891216 is an abundant number, since it is smaller than the sum of its proper divisors (271122864).

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

159891216 is a wasteful number, since it uses less digits than its factorization.

159891216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144863 (or 144857 counting only the distinct ones).

The product of its digits is 38880, while the sum is 42.

The square root of 159891216 is about 12644.8098443591. The cubic root of 159891216 is about 542.7604599220.

It can be divided in two parts, 15989 and 1216, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 159891216 in words is "one hundred fifty-nine million, eight hundred ninety-one thousand, two hundred sixteen".