159878159 has 4 divisors (see below), whose sum is σ = 182717904. Its totient is φ = 137038416.

The previous prime is 159878119. The next prime is 159878197. The reversal of 159878159 is 951878951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 951878951 = 1307 ⋅728293.

It is a cyclic number.

It is not a de Polignac number, because 159878159 - 2⁸ = 159877903 is a prime.

It is a super-2 number, since 2×159878159² = 51122051450458562, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159878159.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159878119) 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 in 3 ways as a sum of consecutive naturals, for example, 11419862 + ... + 11419875.

It is an arithmetic number, because the mean of its divisors is an integer number (45679476).

Almost surely, 2^159878159 is an apocalyptic number.

159878159 is a deficient number, since it is larger than the sum of its proper divisors (22839745).

159878159 is an equidigital number, since it uses as much as digits as its factorization.

159878159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22839744.

The product of its digits is 907200, while the sum is 53.

The square root of 159878159 is about 12644.2935350299. The cubic root of 159878159 is about 542.7456852595.

The spelling of 159878159 in words is "one hundred fifty-nine million, eight hundred seventy-eight thousand, one hundred fifty-nine".