166213319 has 2 divisors, whose sum is σ = 166213320. Its totient is φ = 166213318.

The previous prime is 166213277. The next prime is 166213321. The reversal of 166213319 is 913312661.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166213319 is a prime.

It is a super-2 number, since 2×166213319² = 55253734825991522, which contains 22 as substring.

Together with 166213321, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166213379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83106659 + 83106660.

It is an arithmetic number, because the mean of its divisors is an integer number (83106660).

Almost surely, 2^166213319 is an apocalyptic number.

166213319 is a deficient number, since it is larger than the sum of its proper divisors (1).

166213319 is an equidigital number, since it uses as much as digits as its factorization.

166213319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 32.

The square root of 166213319 is about 12892.3744515896. The cubic root of 166213319 is about 549.8217813758.

The spelling of 166213319 in words is "one hundred sixty-six million, two hundred thirteen thousand, three hundred nineteen".