159634121 has 2 divisors, whose sum is σ = 159634122. Its totient is φ = 159634120.

The previous prime is 159634093. The next prime is 159634141. The reversal of 159634121 is 121436951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142086400 + 17547721 = 11920^2 + 4189^2 .

It is a cyclic number.

It is not a de Polignac number, because 159634121 - 2¹⁸ = 159371977 is a prime.

It is not a weakly prime, because it can be changed into another prime (159634141) 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, 79817060 + 79817061.

It is an arithmetic number, because the mean of its divisors is an integer number (79817061).

Almost surely, 2^159634121 is an apocalyptic number.

It is an amenable number.

159634121 is a deficient number, since it is larger than the sum of its proper divisors (1).

159634121 is an equidigital number, since it uses as much as digits as its factorization.

159634121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 32.

The square root of 159634121 is about 12634.6397257698. The cubic root of 159634121 is about 542.4693956558.

The spelling of 159634121 in words is "one hundred fifty-nine million, six hundred thirty-four thousand, one hundred twenty-one".