159191808 has 144 divisors (see below), whose sum is σ = 456956640. Its totient is φ = 49020928.

The previous prime is 159191803. The next prime is 159191863. The reversal of 159191808 is 808191951.

It is a self number, because there is not a number n which added to its sum of digits gives 159191808.

It is not an unprimeable number, because it can be changed into a prime (159191803) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1161916 + ... + 1162052.

It is an arithmetic number, because the mean of its divisors is an integer number (3173310).

Almost surely, 2^159191808 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159191808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228478320).

159191808 is an abundant number, since it is smaller than the sum of its proper divisors (297764832).

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

159191808 is a wasteful number, since it uses less digits than its factorization.

159191808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 42.

The square root of 159191808 is about 12617.1236024698. The cubic root of 159191808 is about 541.9679088492.

The spelling of 159191808 in words is "one hundred fifty-nine million, one hundred ninety-one thousand, eight hundred eight".