166111163 has 2 divisors, whose sum is σ = 166111164. Its totient is φ = 166111162.

The previous prime is 166111133. The next prime is 166111171. The reversal of 166111163 is 361111661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166111163 - 2⁸ = 166110907 is a prime.

It is not a weakly prime, because it can be changed into another prime (166111123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83055581 + 83055582.

It is an arithmetic number, because the mean of its divisors is an integer number (83055582).

Almost surely, 2^166111163 is an apocalyptic number.

166111163 is a deficient number, since it is larger than the sum of its proper divisors (1).

166111163 is an equidigital number, since it uses as much as digits as its factorization.

166111163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 26.

The square root of 166111163 is about 12888.4119657931. The cubic root of 166111163 is about 549.7091167086.

The spelling of 166111163 in words is "one hundred sixty-six million, one hundred eleven thousand, one hundred sixty-three".