166003111 has 2 divisors, whose sum is σ = 166003112. Its totient is φ = 166003110.

The previous prime is 166003093. The next prime is 166003129. The reversal of 166003111 is 111300661.

It is a balanced prime because it is at equal distance from previous prime (166003093) and next prime (166003129).

It is a cyclic number.

It is not a de Polignac number, because 166003111 - 2²³ = 157614503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166003141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83001555 + 83001556.

It is an arithmetic number, because the mean of its divisors is an integer number (83001556).

Almost surely, 2^166003111 is an apocalyptic number.

166003111 is a deficient number, since it is larger than the sum of its proper divisors (1).

166003111 is an equidigital number, since it uses as much as digits as its factorization.

166003111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 166003111 is about 12884.2194563738. The cubic root of 166003111 is about 549.5898992481.

Adding to 166003111 its reverse (111300661), we get a palindrome (277303772).

The spelling of 166003111 in words is "one hundred sixty-six million, three thousand, one hundred eleven".