159727191 has 16 divisors (see below), whose sum is σ = 229610976. Its totient is φ = 98182656.

The previous prime is 159727171. The next prime is 159727193. The reversal of 159727191 is 191727951.

It is not a de Polignac number, because 159727191 - 2¹⁴ = 159710807 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159727193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44811 + ... + 48243.

It is an arithmetic number, because the mean of its divisors is an integer number (14350686).

Almost surely, 2^159727191 is an apocalyptic number.

159727191 is a deficient number, since it is larger than the sum of its proper divisors (69883785).

159727191 is a wasteful number, since it uses less digits than its factorization.

159727191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4642.

The product of its digits is 39690, while the sum is 42.

The square root of 159727191 is about 12638.3223174597. The cubic root of 159727191 is about 542.5747988067.

The spelling of 159727191 in words is "one hundred fifty-nine million, seven hundred twenty-seven thousand, one hundred ninety-one".