166858147 has 2 divisors, whose sum is σ = 166858148. Its totient is φ = 166858146.

The previous prime is 166858129. The next prime is 166858183. The reversal of 166858147 is 741858661.

166858147 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 a de Polignac number, because none of the positive numbers 2^k-166858147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166858097 and 166858106.

It is not a weakly prime, because it can be changed into another prime (166855147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83429073 + 83429074.

It is an arithmetic number, because the mean of its divisors is an integer number (83429074).

Almost surely, 2^166858147 is an apocalyptic number.

166858147 is a deficient number, since it is larger than the sum of its proper divisors (1).

166858147 is an equidigital number, since it uses as much as digits as its factorization.

166858147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 46.

The square root of 166858147 is about 12917.3583599744. The cubic root of 166858147 is about 550.5318788678.

The spelling of 166858147 in words is "one hundred sixty-six million, eight hundred fifty-eight thousand, one hundred forty-seven".