159591840 has 96 divisors (see below), whose sum is σ = 504475776. Its totient is φ = 42408960.

The previous prime is 159591793. The next prime is 159591847. The reversal of 159591840 is 48195951.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 159591792 and 159591801.

It is not an unprimeable number, because it can be changed into a prime (159591847) 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, 241110 + ... + 241770.

It is an arithmetic number, because the mean of its divisors is an integer number (5254956).

Almost surely, 2^159591840 is an apocalyptic number.

159591840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 159591840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252237888).

159591840 is an abundant number, since it is smaller than the sum of its proper divisors (344883936).

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

159591840 is a wasteful number, since it uses less digits than its factorization.

159591840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 159591840 is about 12632.9663974856. The cubic root of 159591840 is about 542.4214982647.

The spelling of 159591840 in words is "one hundred fifty-nine million, five hundred ninety-one thousand, eight hundred forty".