159549840 has 240 divisors, whose sum is σ = 574516800. Its totient is φ = 39564288.

The previous prime is 159549829. The next prime is 159549853. The reversal of 159549840 is 48945951.

159549840 is a `hidden beast` number, since 159 + 5 + 498 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1463706 + ... + 1463814.

It is an arithmetic number, because the mean of its divisors is an integer number (2393820).

Almost surely, 2^159549840 is an apocalyptic number.

159549840 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 159549840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287258400).

159549840 is an abundant number, since it is smaller than the sum of its proper divisors (414966960).

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

159549840 is a wasteful number, since it uses less digits than its factorization.

159549840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 45.

The square root of 159549840 is about 12631.3039706912. The cubic root of 159549840 is about 542.3739108239.

The spelling of 159549840 in words is "one hundred fifty-nine million, five hundred forty-nine thousand, eight hundred forty".