166216159 has 2 divisors, whose sum is σ = 166216160. Its totient is φ = 166216158.

The previous prime is 166216129. The next prime is 166216163. The reversal of 166216159 is 951612661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166216159 - 2²⁷ = 31998431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166216129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83108079 + 83108080.

It is an arithmetic number, because the mean of its divisors is an integer number (83108080).

Almost surely, 2^166216159 is an apocalyptic number.

166216159 is a deficient number, since it is larger than the sum of its proper divisors (1).

166216159 is an equidigital number, since it uses as much as digits as its factorization.

166216159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 166216159 is about 12892.4845937469. The cubic root of 166216159 is about 549.8249128637.

It can be divided in two parts, 166216 and 159, that added together give a cube (166375 = 55³).

The spelling of 166216159 in words is "one hundred sixty-six million, two hundred sixteen thousand, one hundred fifty-nine".