166249159 has 2 divisors, whose sum is σ = 166249160. Its totient is φ = 166249158.

The previous prime is 166249147. The next prime is 166249189. The reversal of 166249159 is 951942661.

166249159 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166249159 - 2⁹ = 166248647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166249189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83124579 + 83124580.

It is an arithmetic number, because the mean of its divisors is an integer number (83124580).

Almost surely, 2^166249159 is an apocalyptic number.

166249159 is a deficient number, since it is larger than the sum of its proper divisors (1).

166249159 is an equidigital number, since it uses as much as digits as its factorization.

166249159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 43.

The square root of 166249159 is about 12893.7643456052. The cubic root of 166249159 is about 549.8612972553.

The spelling of 166249159 in words is "one hundred sixty-six million, two hundred forty-nine thousand, one hundred fifty-nine".