159968643 has 16 divisors (see below), whose sum is σ = 218676480. Its totient is φ = 103963104.

The previous prime is 159968621. The next prime is 159968693. The reversal of 159968643 is 346869951.

It is not a de Polignac number, because 159968643 - 2⁸ = 159968387 is a prime.

It is a super-2 number, since 2×159968643² = 51179933486522898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159968603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 95013 + ... + 96681.

It is an arithmetic number, because the mean of its divisors is an integer number (13667280).

Almost surely, 2^159968643 is an apocalyptic number.

159968643 is a deficient number, since it is larger than the sum of its proper divisors (58707837).

159968643 is a wasteful number, since it uses less digits than its factorization.

159968643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2458.

The product of its digits is 1399680, while the sum is 51.

The square root of 159968643 is about 12647.8710856808. The cubic root of 159968643 is about 542.8480560047.

The spelling of 159968643 in words is "one hundred fifty-nine million, nine hundred sixty-eight thousand, six hundred forty-three".