166974011 has 2 divisors, whose sum is σ = 166974012. Its totient is φ = 166974010.

The previous prime is 166973999. The next prime is 166974013. The reversal of 166974011 is 110479661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166974011 - 2¹⁴ = 166957627 is a prime.

It is a Sophie Germain prime.

Together with 166974013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166974013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83487005 + 83487006.

It is an arithmetic number, because the mean of its divisors is an integer number (83487006).

Almost surely, 2^166974011 is an apocalyptic number.

166974011 is a deficient number, since it is larger than the sum of its proper divisors (1).

166974011 is an equidigital number, since it uses as much as digits as its factorization.

166974011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 35.

The square root of 166974011 is about 12921.8423995961. The cubic root of 166974011 is about 550.6592766370.

The spelling of 166974011 in words is "one hundred sixty-six million, nine hundred seventy-four thousand, eleven".