159780863 has 12 divisors (see below), whose sum is σ = 178257240. Its totient is φ = 143080080.

The previous prime is 159780847. The next prime is 159780869. The reversal of 159780863 is 368087951.

It is a happy number.

It is not a de Polignac number, because 159780863 - 2⁴ = 159780847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159780869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1748 + ... + 17961.

It is an arithmetic number, because the mean of its divisors is an integer number (14854770).

Almost surely, 2^159780863 is an apocalyptic number.

159780863 is a deficient number, since it is larger than the sum of its proper divisors (18476377).

159780863 is a wasteful number, since it uses less digits than its factorization.

159780863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19798 (or 19787 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 159780863 is about 12640.4455222116. The cubic root of 159780863 is about 542.6355645270.

The spelling of 159780863 in words is "one hundred fifty-nine million, seven hundred eighty thousand, eight hundred sixty-three".