159643671 has 8 divisors (see below), whose sum is σ = 232209024. Its totient is φ = 96753720.

The previous prime is 159643663. The next prime is 159643691. The reversal of 159643671 is 176346951.

159643671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 159643671 - 2³ = 159643663 is a prime.

It is a super-2 number, since 2×159643671² = 50972203380712482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159643691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2418811 + ... + 2418876.

It is an arithmetic number, because the mean of its divisors is an integer number (29026128).

Almost surely, 2^159643671 is an apocalyptic number.

159643671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

159643671 is a deficient number, since it is larger than the sum of its proper divisors (72565353).

159643671 is a wasteful number, since it uses less digits than its factorization.

159643671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837701.

The product of its digits is 136080, while the sum is 42.

The square root of 159643671 is about 12635.0176493743. The cubic root of 159643671 is about 542.4802130579.

The spelling of 159643671 in words is "one hundred fifty-nine million, six hundred forty-three thousand, six hundred seventy-one".