159891151 has 4 divisors (see below), whose sum is σ = 182732752. Its totient is φ = 137049552.

The previous prime is 159891143. The next prime is 159891167. The reversal of 159891151 is 151198951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159891151 - 2³ = 159891143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159891451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11420790 + ... + 11420803.

It is an arithmetic number, because the mean of its divisors is an integer number (45683188).

Almost surely, 2^159891151 is an apocalyptic number.

159891151 is a deficient number, since it is larger than the sum of its proper divisors (22841601).

159891151 is an equidigital number, since it uses as much as digits as its factorization.

159891151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22841600.

The product of its digits is 16200, while the sum is 40.

The square root of 159891151 is about 12644.8072741343. The cubic root of 159891151 is about 542.7603863732.

The spelling of 159891151 in words is "one hundred fifty-nine million, eight hundred ninety-one thousand, one hundred fifty-one".