159981158 has 4 divisors (see below), whose sum is σ = 239971740. Its totient is φ = 79990578.

The previous prime is 159981131. The next prime is 159981161. The reversal of 159981158 is 851189951.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 39995288 + ... + 39995291.

It is an arithmetic number, because the mean of its divisors is an integer number (59992935).

Almost surely, 2^159981158 is an apocalyptic number.

159981158 is a deficient number, since it is larger than the sum of its proper divisors (79990582).

159981158 is an equidigital number, since it uses as much as digits as its factorization.

159981158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79990581.

The product of its digits is 129600, while the sum is 47.

The square root of 159981158 is about 12648.3658232991. The cubic root of 159981158 is about 542.8622120421.

The spelling of 159981158 in words is "one hundred fifty-nine million, nine hundred eighty-one thousand, one hundred fifty-eight".