166085963 has 2 divisors, whose sum is σ = 166085964. Its totient is φ = 166085962.

The previous prime is 166085951. The next prime is 166085977. The reversal of 166085963 is 369580661.

166085963 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166085963 is a prime.

It is not a weakly prime, because it can be changed into another prime (166085863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83042981 + 83042982.

It is an arithmetic number, because the mean of its divisors is an integer number (83042982).

Almost surely, 2^166085963 is an apocalyptic number.

166085963 is a deficient number, since it is larger than the sum of its proper divisors (1).

166085963 is an equidigital number, since it uses as much as digits as its factorization.

166085963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 166085963 is about 12887.4343063311. The cubic root of 166085963 is about 549.6813173119.

The spelling of 166085963 in words is "one hundred sixty-six million, eighty-five thousand, nine hundred sixty-three".