159771013 has 2 divisors, whose sum is σ = 159771014. Its totient is φ = 159771012.

The previous prime is 159770959. The next prime is 159771037. The reversal of 159771013 is 310177951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127983969 + 31787044 = 11313^2 + 5638^2 .

It is a cyclic number.

It is not a de Polignac number, because 159771013 - 2²⁵ = 126216581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159771013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159771043) 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, 79885506 + 79885507.

It is an arithmetic number, because the mean of its divisors is an integer number (79885507).

Almost surely, 2^159771013 is an apocalyptic number.

It is an amenable number.

159771013 is a deficient number, since it is larger than the sum of its proper divisors (1).

159771013 is an equidigital number, since it uses as much as digits as its factorization.

159771013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6615, while the sum is 34.

The square root of 159771013 is about 12640.0558938638. The cubic root of 159771013 is about 542.6244136920.

The spelling of 159771013 in words is "one hundred fifty-nine million, seven hundred seventy-one thousand, thirteen".