159909166 has 4 divisors (see below), whose sum is σ = 239863752. Its totient is φ = 79954582.

The previous prime is 159909163. The next prime is 159909173. The reversal of 159909166 is 661909951.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159909163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39977290 + ... + 39977293.

It is an arithmetic number, because the mean of its divisors is an integer number (59965938).

Almost surely, 2^159909166 is an apocalyptic number.

159909166 is a deficient number, since it is larger than the sum of its proper divisors (79954586).

159909166 is an equidigital number, since it uses as much as digits as its factorization.

159909166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79954585.

The product of its (nonzero) digits is 131220, while the sum is 46.

The square root of 159909166 is about 12645.5196018195. The cubic root of 159909166 is about 542.7807699510.

The spelling of 159909166 in words is "one hundred fifty-nine million, nine hundred nine thousand, one hundred sixty-six".