159243967 has 4 divisors (see below), whose sum is σ = 163547896. Its totient is φ = 154940040.

The previous prime is 159243961. The next prime is 159243971. The reversal of 159243967 is 769342951.

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: 769342951 = 13 ⋅59180227.

It is a cyclic number.

It is not a de Polignac number, because 159243967 - 2⁷ = 159243839 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 (159243961) 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, 2151909 + ... + 2151982.

It is an arithmetic number, because the mean of its divisors is an integer number (40886974).

Almost surely, 2^159243967 is an apocalyptic number.

159243967 is a deficient number, since it is larger than the sum of its proper divisors (4303929).

159243967 is an equidigital number, since it uses as much as digits as its factorization.

159243967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4303928.

The product of its digits is 408240, while the sum is 46.

The square root of 159243967 is about 12619.1904256969. The cubic root of 159243967 is about 542.0270940918.

It can be divided in two parts, 15924 and 3967, that added together give a palindrome (19891).

The spelling of 159243967 in words is "one hundred fifty-nine million, two hundred forty-three thousand, nine hundred sixty-seven".