159812644 has 12 divisors (see below), whose sum is σ = 280245168. Its totient is φ = 79742600.

The previous prime is 159812593. The next prime is 159812659. The reversal of 159812644 is 446218951.

159812644 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 159812597 and 159812606.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38722 + ... + 42649.

It is an arithmetic number, because the mean of its divisors is an integer number (23353764).

Almost surely, 2^159812644 is an apocalyptic number.

It is an amenable number.

159812644 is a deficient number, since it is larger than the sum of its proper divisors (120432524).

159812644 is a wasteful number, since it uses less digits than its factorization.

159812644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81866 (or 81864 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 159812644 is about 12641.7025752072. The cubic root of 159812644 is about 542.6715395436.

The spelling of 159812644 in words is "one hundred fifty-nine million, eight hundred twelve thousand, six hundred forty-four".