166178083 has 2 divisors, whose sum is σ = 166178084. Its totient is φ = 166178082.

The previous prime is 166178081. The next prime is 166178087. The reversal of 166178083 is 380871661.

It is a weak prime.

It is an emirp because it is prime and its reverse (380871661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166178083 - 2¹ = 166178081 is a prime.

Together with 166178081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (166178081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83089041 + 83089042.

It is an arithmetic number, because the mean of its divisors is an integer number (83089042).

Almost surely, 2^166178083 is an apocalyptic number.

166178083 is a deficient number, since it is larger than the sum of its proper divisors (1).

166178083 is an equidigital number, since it uses as much as digits as its factorization.

166178083 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 166178083 is about 12891.0078349212. The cubic root of 166178083 is about 549.7829259067.

The spelling of 166178083 in words is "one hundred sixty-six million, one hundred seventy-eight thousand, eighty-three".