159617956 has 9 divisors (see below), whose sum is σ = 279375649. Its totient is φ = 79796344.

The previous prime is 159617933. The next prime is 159617957. The reversal of 159617956 is 659716951.

The square root of 159617956 is 12634.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 85932900 + 73685056 = 9270^2 + 8584^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159617957) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 22110 + ... + 28426.

Almost surely, 2^159617956 is an apocalyptic number.

159617956 is the 12634-th square number.

It is an amenable number.

159617956 is a deficient number, since it is larger than the sum of its proper divisors (119757693).

159617956 is an frugal number, since it uses more digits than its factorization.

159617956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12638 (or 6319 counting only the distinct ones).

The product of its digits is 510300, while the sum is 49.

The cubic root of 159617956 is about 542.4510843789.

Multiplying 159617956 by its sum of digits (49), we get a square (7821279844 = 88438²).

The spelling of 159617956 in words is "one hundred fifty-nine million, six hundred seventeen thousand, nine hundred fifty-six".