159981259 has 4 divisors (see below), whose sum is σ = 160038216. Its totient is φ = 159924304.

The previous prime is 159981253. The next prime is 159981277. The reversal of 159981259 is 952189951.

159981259 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 159981259 - 2⁷ = 159981131 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159981253) 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, 24034 + ... + 29959.

It is an arithmetic number, because the mean of its divisors is an integer number (40009554).

Almost surely, 2^159981259 is an apocalyptic number.

159981259 is a deficient number, since it is larger than the sum of its proper divisors (56957).

159981259 is an equidigital number, since it uses as much as digits as its factorization.

159981259 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56956.

The product of its digits is 291600, while the sum is 49.

The square root of 159981259 is about 12648.3698159091. The cubic root of 159981259 is about 542.8623262828.

The spelling of 159981259 in words is "one hundred fifty-nine million, nine hundred eighty-one thousand, two hundred fifty-nine".