166379419 has 2 divisors, whose sum is σ = 166379420. Its totient is φ = 166379418.

The previous prime is 166379407. The next prime is 166379429. The reversal of 166379419 is 914973661.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166379419 - 2⁹ = 166378907 is a prime.

It is a super-2 number, since 2×166379419² = 55364222133555122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (166379429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83189709 + 83189710.

It is an arithmetic number, because the mean of its divisors is an integer number (83189710).

Almost surely, 2^166379419 is an apocalyptic number.

166379419 is a deficient number, since it is larger than the sum of its proper divisors (1).

166379419 is an equidigital number, since it uses as much as digits as its factorization.

166379419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 166379419 is about 12898.8146354617. The cubic root of 166379419 is about 550.0048693784.

The spelling of 166379419 in words is "one hundred sixty-six million, three hundred seventy-nine thousand, four hundred nineteen".