159671197 has 4 divisors (see below), whose sum is σ = 182481376. Its totient is φ = 136861020.

The previous prime is 159671153. The next prime is 159671201. The reversal of 159671197 is 791176951.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 791176951 = 53 ⋅14927867.

It is a cyclic number.

It is not a de Polignac number, because 159671197 - 2¹¹ = 159669149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159671597) 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 3 ways as a sum of consecutive naturals, for example, 11405079 + ... + 11405092.

It is an arithmetic number, because the mean of its divisors is an integer number (45620344).

Almost surely, 2^159671197 is an apocalyptic number.

It is an amenable number.

159671197 is a deficient number, since it is larger than the sum of its proper divisors (22810179).

159671197 is an equidigital number, since it uses as much as digits as its factorization.

159671197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22810178.

The product of its digits is 119070, while the sum is 46.

The square root of 159671197 is about 12636.1068767243. The cubic root of 159671197 is about 542.5113896821.

The spelling of 159671197 in words is "one hundred fifty-nine million, six hundred seventy-one thousand, one hundred ninety-seven".