159945893 has 2 divisors, whose sum is σ = 159945894. Its totient is φ = 159945892.

The previous prime is 159945881. The next prime is 159945901. The reversal of 159945893 is 398549951.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141300769 + 18645124 = 11887^2 + 4318^2 .

It is a cyclic number.

It is not a de Polignac number, because 159945893 - 2⁶ = 159945829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159945803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79972946 + 79972947.

It is an arithmetic number, because the mean of its divisors is an integer number (79972947).

Almost surely, 2^159945893 is an apocalyptic number.

It is an amenable number.

159945893 is a deficient number, since it is larger than the sum of its proper divisors (1).

159945893 is an equidigital number, since it uses as much as digits as its factorization.

159945893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1749600, while the sum is 53.

The square root of 159945893 is about 12646.9716928599. The cubic root of 159945893 is about 542.8223210054.

The spelling of 159945893 in words is "one hundred fifty-nine million, nine hundred forty-five thousand, eight hundred ninety-three".