159913440 has 192 divisors, whose sum is σ = 567846720. Its totient is φ = 42550272.

The previous prime is 159913433. The next prime is 159913451. The reversal of 159913440 is 44319951.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 159913395 and 159913404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349692 + ... + 350148.

It is an arithmetic number, because the mean of its divisors is an integer number (2957535).

Almost surely, 2^159913440 is an apocalyptic number.

159913440 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 159913440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283923360).

159913440 is an abundant number, since it is smaller than the sum of its proper divisors (407933280).

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

159913440 is an frugal number, since it uses more digits than its factorization.

159913440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 159913440 is about 12645.6885933507. The cubic root of 159913440 is about 542.7856056637.

The spelling of 159913440 in words is "one hundred fifty-nine million, nine hundred thirteen thousand, four hundred forty".