159937961 has 2 divisors, whose sum is σ = 159937962. Its totient is φ = 159937960.

The previous prime is 159937933. The next prime is 159937969. The reversal of 159937961 is 169739951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 126990361 + 32947600 = 11269^2 + 5740^2 .

It is a cyclic number.

It is not a de Polignac number, because 159937961 - 2¹⁴ = 159921577 is a prime.

It is not a weakly prime, because it can be changed into another prime (159937969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79968980 + 79968981.

It is an arithmetic number, because the mean of its divisors is an integer number (79968981).

Almost surely, 2^159937961 is an apocalyptic number.

It is an amenable number.

159937961 is a deficient number, since it is larger than the sum of its proper divisors (1).

159937961 is an equidigital number, since it uses as much as digits as its factorization.

159937961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 459270, while the sum is 50.

The square root of 159937961 is about 12646.6580961138. The cubic root of 159937961 is about 542.8133476838.

The spelling of 159937961 in words is "one hundred fifty-nine million, nine hundred thirty-seven thousand, nine hundred sixty-one".