159978801 has 8 divisors (see below), whose sum is σ = 213503904. Its totient is φ = 106553120.

The previous prime is 159978799. The next prime is 159978829. The reversal of 159978801 is 108879951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 159978801 - 2¹ = 159978799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (159978851) by changing a digit.

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, 21015 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (26687988).

Almost surely, 2^159978801 is an apocalyptic number.

It is an amenable number.

159978801 is a deficient number, since it is larger than the sum of its proper divisors (53525103).

159978801 is a wasteful number, since it uses less digits than its factorization.

159978801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49711.

The product of its (nonzero) digits is 181440, while the sum is 48.

The square root of 159978801 is about 12648.2726488640. The cubic root of 159978801 is about 542.8595460354.

The spelling of 159978801 in words is "one hundred fifty-nine million, nine hundred seventy-eight thousand, eight hundred one".