159669643 has 8 divisors (see below), whose sum is σ = 185203712. Its totient is φ = 134816616.

The previous prime is 159669617. The next prime is 159669647. The reversal of 159669643 is 346966951.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-159669643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159669647) 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 7 ways as a sum of consecutive naturals, for example, 169755 + ... + 170692.

It is an arithmetic number, because the mean of its divisors is an integer number (23150464).

Almost surely, 2^159669643 is an apocalyptic number.

159669643 is a deficient number, since it is larger than the sum of its proper divisors (25534069).

159669643 is an equidigital number, since it uses as much as digits as its factorization.

159669643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340521.

The product of its digits is 1049760, while the sum is 49.

The square root of 159669643 is about 12636.0453861167. The cubic root of 159669643 is about 542.5096296789.

The spelling of 159669643 in words is "one hundred fifty-nine million, six hundred sixty-nine thousand, six hundred forty-three".