166658113 has 2 divisors, whose sum is σ = 166658114. Its totient is φ = 166658112.

The previous prime is 166658111. The next prime is 166658119. The reversal of 166658113 is 311856661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156050064 + 10608049 = 12492^2 + 3257^2 .

It is a cyclic number.

It is not a de Polignac number, because 166658113 - 2¹ = 166658111 is a prime.

Together with 166658111, it forms a pair of twin primes.

It is equal to p_9326548 and since 166658113 and 9326548 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (166658111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83329056 + 83329057.

It is an arithmetic number, because the mean of its divisors is an integer number (83329057).

Almost surely, 2^166658113 is an apocalyptic number.

It is an amenable number.

166658113 is a deficient number, since it is larger than the sum of its proper divisors (1).

166658113 is an equidigital number, since it uses as much as digits as its factorization.

166658113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 166658113 is about 12909.6132010219. The cubic root of 166658113 is about 550.3117934597.

The spelling of 166658113 in words is "one hundred sixty-six million, six hundred fifty-eight thousand, one hundred thirteen".