159397018 has 16 divisors (see below), whose sum is σ = 263977056. Its totient is φ = 71579440.

The previous prime is 159397013. The next prime is 159397027. The reversal of 159397018 is 810793951.

It is not an unprimeable number, because it can be changed into a prime (159397013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41821 + ... + 45472.

It is an arithmetic number, because the mean of its divisors is an integer number (16498566).

Almost surely, 2^159397018 is an apocalyptic number.

159397018 is a deficient number, since it is larger than the sum of its proper divisors (104580038).

159397018 is a wasteful number, since it uses less digits than its factorization.

159397018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87389.

The product of its (nonzero) digits is 68040, while the sum is 43.

The square root of 159397018 is about 12625.2531855801. The cubic root of 159397018 is about 542.2006877446.

The spelling of 159397018 in words is "one hundred fifty-nine million, three hundred ninety-seven thousand, eighteen".