166910423 has 2 divisors, whose sum is σ = 166910424. Its totient is φ = 166910422.

The previous prime is 166910407. The next prime is 166910431. The reversal of 166910423 is 324019661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166910423 - 2⁴ = 166910407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166910423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166910473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83455211 + 83455212.

It is an arithmetic number, because the mean of its divisors is an integer number (83455212).

Almost surely, 2^166910423 is an apocalyptic number.

166910423 is a deficient number, since it is larger than the sum of its proper divisors (1).

166910423 is an equidigital number, since it uses as much as digits as its factorization.

166910423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 166910423 is about 12919.3816802508. The cubic root of 166910423 is about 550.5893660209.

The spelling of 166910423 in words is "one hundred sixty-six million, nine hundred ten thousand, four hundred twenty-three".