166213363 has 2 divisors, whose sum is σ = 166213364. Its totient is φ = 166213362.

The previous prime is 166213321. The next prime is 166213367. The reversal of 166213363 is 363312661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166213363 - 2¹⁷ = 166082291 is a prime.

It is not a weakly prime, because it can be changed into another prime (166213367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83106681 + 83106682.

It is an arithmetic number, because the mean of its divisors is an integer number (83106682).

Almost surely, 2^166213363 is an apocalyptic number.

166213363 is a deficient number, since it is larger than the sum of its proper divisors (1).

166213363 is an equidigital number, since it uses as much as digits as its factorization.

166213363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11664, while the sum is 31.

The square root of 166213363 is about 12892.3761580246. The cubic root of 166213363 is about 549.8218298921.

The spelling of 166213363 in words is "one hundred sixty-six million, two hundred thirteen thousand, three hundred sixty-three".