166368859 has 2 divisors, whose sum is σ = 166368860. Its totient is φ = 166368858.

The previous prime is 166368841. The next prime is 166368863. The reversal of 166368859 is 958863661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166368859 is a prime.

It is not a weakly prime, because it can be changed into another prime (166368889) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83184429 + 83184430.

It is an arithmetic number, because the mean of its divisors is an integer number (83184430).

Almost surely, 2^166368859 is an apocalyptic number.

166368859 is a deficient number, since it is larger than the sum of its proper divisors (1).

166368859 is an equidigital number, since it uses as much as digits as its factorization.

166368859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 166368859 is about 12898.4052890270. The cubic root of 166368859 is about 549.9932329746.

The spelling of 166368859 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, eight hundred fifty-nine".