159072391 has 2 divisors, whose sum is σ = 159072392. Its totient is φ = 159072390.

The previous prime is 159072341. The next prime is 159072401. The reversal of 159072391 is 193270951.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159072391 - 2¹⁷ = 158941319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 159072391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (159072341) 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, 79536195 + 79536196.

It is an arithmetic number, because the mean of its divisors is an integer number (79536196).

Almost surely, 2^159072391 is an apocalyptic number.

159072391 is a deficient number, since it is larger than the sum of its proper divisors (1).

159072391 is an equidigital number, since it uses as much as digits as its factorization.

159072391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 159072391 is about 12612.3903761341. The cubic root of 159072391 is about 541.8323567072.

The spelling of 159072391 in words is "one hundred fifty-nine million, seventy-two thousand, three hundred ninety-one".