159226818 has 16 divisors (see below), whose sum is σ = 320362560. Its totient is φ = 52757456.

The previous prime is 159226763. The next prime is 159226829. The reversal of 159226818 is 818622951.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 159226818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78453 + ... + 80456.

It is an arithmetic number, because the mean of its divisors is an integer number (20022660).

Almost surely, 2^159226818 is an apocalyptic number.

159226818 is an abundant number, since it is smaller than the sum of its proper divisors (161135742).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

159226818 is a wasteful number, since it uses less digits than its factorization.

159226818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159081.

The product of its digits is 69120, while the sum is 42.

The square root of 159226818 is about 12618.5109264128. The cubic root of 159226818 is about 542.0076364079.

The spelling of 159226818 in words is "one hundred fifty-nine million, two hundred twenty-six thousand, eight hundred eighteen".