166432159 has 4 divisors (see below), whose sum is σ = 176222304. Its totient is φ = 156642016.

The previous prime is 166432151. The next prime is 166432171. The reversal of 166432159 is 951234661.

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

It is a cyclic number.

It is not a de Polignac number, because 166432159 - 2³ = 166432151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166432151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4895047 + ... + 4895080.

It is an arithmetic number, because the mean of its divisors is an integer number (44055576).

Almost surely, 2^166432159 is an apocalyptic number.

166432159 is a deficient number, since it is larger than the sum of its proper divisors (9790145).

166432159 is an equidigital number, since it uses as much as digits as its factorization.

166432159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9790144.

The product of its digits is 38880, while the sum is 37.

The square root of 166432159 is about 12900.8588473791. The cubic root of 166432159 is about 550.0629779124.

The spelling of 166432159 in words is "one hundred sixty-six million, four hundred thirty-two thousand, one hundred fifty-nine".