159616969 has 2 divisors, whose sum is σ = 159616970. Its totient is φ = 159616968.

The previous prime is 159616949. The next prime is 159616991. The reversal of 159616969 is 969616951.

159616969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89056969 + 70560000 = 9437^2 + 8400^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159616969 is a prime.

It is a super-2 number, since 2×159616969² = 50955153585493922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159616939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79808484 + 79808485.

It is an arithmetic number, because the mean of its divisors is an integer number (79808485).

Almost surely, 2^159616969 is an apocalyptic number.

It is an amenable number.

159616969 is a deficient number, since it is larger than the sum of its proper divisors (1).

159616969 is an equidigital number, since it uses as much as digits as its factorization.

159616969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 52.

The square root of 159616969 is about 12633.9609386764. The cubic root of 159616969 is about 542.4499662918.

The spelling of 159616969 in words is "one hundred fifty-nine million, six hundred sixteen thousand, nine hundred sixty-nine".