166248983 has 2 divisors, whose sum is σ = 166248984. Its totient is φ = 166248982.

The previous prime is 166248977. The next prime is 166248997. The reversal of 166248983 is 389842661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166248983 - 2⁶ = 166248919 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166248913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83124491 + 83124492.

It is an arithmetic number, because the mean of its divisors is an integer number (83124492).

Almost surely, 2^166248983 is an apocalyptic number.

166248983 is a deficient number, since it is larger than the sum of its proper divisors (1).

166248983 is an equidigital number, since it uses as much as digits as its factorization.

166248983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 47.

The square root of 166248983 is about 12893.7575205989. The cubic root of 166248983 is about 549.8611032180.

The spelling of 166248983 in words is "one hundred sixty-six million, two hundred forty-eight thousand, nine hundred eighty-three".