166159839 has 8 divisors (see below), whose sum is σ = 226950192. Its totient is φ = 108071360.

The previous prime is 166159837. The next prime is 166159849. The reversal of 166159839 is 938951661.

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

It is a cyclic number.

It is not a de Polignac number, because 166159839 - 2¹ = 166159837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166159837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675324 + ... + 675569.

It is an arithmetic number, because the mean of its divisors is an integer number (28368774).

Almost surely, 2^166159839 is an apocalyptic number.

166159839 is a deficient number, since it is larger than the sum of its proper divisors (60790353).

166159839 is a wasteful number, since it uses less digits than its factorization.

166159839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350937.

The product of its digits is 349920, while the sum is 48.

The square root of 166159839 is about 12890.3001904533. The cubic root of 166159839 is about 549.7628057107.

The spelling of 166159839 in words is "one hundred sixty-six million, one hundred fifty-nine thousand, eight hundred thirty-nine".