159538969 has 4 divisors (see below), whose sum is σ = 159811344. Its totient is φ = 159266596.

The previous prime is 159538963. The next prime is 159538979. The reversal of 159538969 is 969835951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159538969 - 2¹¹ = 159536921 is a prime.

It is a super-2 number, since 2×159538969² = 50905365259165922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159538963) 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, 135307 + ... + 136480.

It is an arithmetic number, because the mean of its divisors is an integer number (39952836).

Almost surely, 2^159538969 is an apocalyptic number.

It is an amenable number.

159538969 is a deficient number, since it is larger than the sum of its proper divisors (272375).

159538969 is an equidigital number, since it uses as much as digits as its factorization.

159538969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272374.

The product of its digits is 2624400, while the sum is 55.

The square root of 159538969 is about 12630.8736435767. The cubic root of 159538969 is about 542.3615922474.

The spelling of 159538969 in words is "one hundred fifty-nine million, five hundred thirty-eight thousand, nine hundred sixty-nine".