159812178 has 16 divisors (see below), whose sum is σ = 327420576. Its totient is φ = 51971360.

The previous prime is 159812167. The next prime is 159812201. The reversal of 159812178 is 871218951.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324576 + ... + 325067.

It is an arithmetic number, because the mean of its divisors is an integer number (20463786).

Almost surely, 2^159812178 is an apocalyptic number.

159812178 is an abundant number, since it is smaller than the sum of its proper divisors (167608398).

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

159812178 is a wasteful number, since it uses less digits than its factorization.

159812178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649689.

The product of its digits is 40320, while the sum is 42.

The square root of 159812178 is about 12641.6841441321. The cubic root of 159812178 is about 542.6710120819.

The spelling of 159812178 in words is "one hundred fifty-nine million, eight hundred twelve thousand, one hundred seventy-eight".