166305379 has 2 divisors, whose sum is σ = 166305380. Its totient is φ = 166305378.

The previous prime is 166305367. The next prime is 166305409. The reversal of 166305379 is 973503661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166305379 - 2⁹ = 166304867 is a prime.

It is not a weakly prime, because it can be changed into another prime (166305079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83152689 + 83152690.

It is an arithmetic number, because the mean of its divisors is an integer number (83152690).

Almost surely, 2^166305379 is an apocalyptic number.

166305379 is a deficient number, since it is larger than the sum of its proper divisors (1).

166305379 is an equidigital number, since it uses as much as digits as its factorization.

166305379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 166305379 is about 12895.9442849293. The cubic root of 166305379 is about 549.9232719411.

The spelling of 166305379 in words is "one hundred sixty-six million, three hundred five thousand, three hundred seventy-nine".