166003141 has 2 divisors, whose sum is σ = 166003142. Its totient is φ = 166003140.

The previous prime is 166003139. The next prime is 166003169. The reversal of 166003141 is 141300661.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 140541025 + 25462116 = 11855^2 + 5046^2 .

It is a cyclic number.

It is not a de Polignac number, because 166003141 - 2¹ = 166003139 is a prime.

Together with 166003139, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166003111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83001570 + 83001571.

It is an arithmetic number, because the mean of its divisors is an integer number (83001571).

Almost surely, 2^166003141 is an apocalyptic number.

It is an amenable number.

166003141 is a deficient number, since it is larger than the sum of its proper divisors (1).

166003141 is an equidigital number, since it uses as much as digits as its factorization.

166003141 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 166003141 is about 12884.2206205886. The cubic root of 166003141 is about 549.5899323553.

The spelling of 166003141 in words is "one hundred sixty-six million, three thousand, one hundred forty-one".