166010291 has 2 divisors, whose sum is σ = 166010292. Its totient is φ = 166010290.

The previous prime is 166010269. The next prime is 166010293. The reversal of 166010291 is 192010661.

It is a strong prime.

It is an emirp because it is prime and its reverse (192010661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166010291 - 2⁶ = 166010227 is a prime.

Together with 166010293, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166010291.

It is not a weakly prime, because it can be changed into another prime (166010293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83005145 + 83005146.

It is an arithmetic number, because the mean of its divisors is an integer number (83005146).

Almost surely, 2^166010291 is an apocalyptic number.

166010291 is a deficient number, since it is larger than the sum of its proper divisors (1).

166010291 is an equidigital number, since it uses as much as digits as its factorization.

166010291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 166010291 is about 12884.4980887887. The cubic root of 166010291 is about 549.5978227915.

The spelling of 166010291 in words is "one hundred sixty-six million, ten thousand, two hundred ninety-one".