159161979 has 4 divisors (see below), whose sum is σ = 212215976. Its totient is φ = 106107984.

The previous prime is 159161971. The next prime is 159161983. The reversal of 159161979 is 979161951.

It is a happy number.

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

It is not a de Polignac number, because 159161979 - 2³ = 159161971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159161971) 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, 26526994 + ... + 26526999.

It is an arithmetic number, because the mean of its divisors is an integer number (53053994).

Almost surely, 2^159161979 is an apocalyptic number.

159161979 is a deficient number, since it is larger than the sum of its proper divisors (53053997).

159161979 is an equidigital number, since it uses as much as digits as its factorization.

159161979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53053996.

The product of its digits is 153090, while the sum is 48.

The square root of 159161979 is about 12615.9414630855. The cubic root of 159161979 is about 541.9340558287.

The spelling of 159161979 in words is "one hundred fifty-nine million, one hundred sixty-one thousand, nine hundred seventy-nine".