159611941 has 2 divisors, whose sum is σ = 159611942. Its totient is φ = 159611940.

The previous prime is 159611939. The next prime is 159611971. The reversal of 159611941 is 149116951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91202500 + 68409441 = 9550^2 + 8271^2 .

It is an emirp because it is prime and its reverse (149116951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159611941 - 2¹ = 159611939 is a prime.

Together with 159611939, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159611941.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159611971) 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, 79805970 + 79805971.

It is an arithmetic number, because the mean of its divisors is an integer number (79805971).

Almost surely, 2^159611941 is an apocalyptic number.

It is an amenable number.

159611941 is a deficient number, since it is larger than the sum of its proper divisors (1).

159611941 is an equidigital number, since it uses as much as digits as its factorization.

159611941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 37.

The square root of 159611941 is about 12633.7619496332. The cubic root of 159611941 is about 542.4442704332. Note that the first 3 decimals are identical.

The spelling of 159611941 in words is "one hundred fifty-nine million, six hundred eleven thousand, nine hundred forty-one".