166348643 has 2 divisors, whose sum is σ = 166348644. Its totient is φ = 166348642.

The previous prime is 166348631. The next prime is 166348657. The reversal of 166348643 is 346843661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166348643 - 2⁶ = 166348579 is a prime.

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 166348643.

It is not a weakly prime, because it can be changed into another prime (166348943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83174321 + 83174322.

It is an arithmetic number, because the mean of its divisors is an integer number (83174322).

Almost surely, 2^166348643 is an apocalyptic number.

166348643 is a deficient number, since it is larger than the sum of its proper divisors (1).

166348643 is an equidigital number, since it uses as much as digits as its factorization.

166348643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

The square root of 166348643 is about 12897.6216024506. The cubic root of 166348643 is about 549.9709549400.

The spelling of 166348643 in words is "one hundred sixty-six million, three hundred forty-eight thousand, six hundred forty-three".