166123703 has 2 divisors, whose sum is σ = 166123704. Its totient is φ = 166123702.

The previous prime is 166123697. The next prime is 166123721. The reversal of 166123703 is 307321661.

It is a weak prime.

It is an emirp because it is prime and its reverse (307321661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166123703 - 2¹⁸ = 165861559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166123723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83061851 + 83061852.

It is an arithmetic number, because the mean of its divisors is an integer number (83061852).

Almost surely, 2^166123703 is an apocalyptic number.

166123703 is a deficient number, since it is larger than the sum of its proper divisors (1).

166123703 is an equidigital number, since it uses as much as digits as its factorization.

166123703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 166123703 is about 12888.8984401306. The cubic root of 166123703 is about 549.7229491702.

The spelling of 166123703 in words is "one hundred sixty-six million, one hundred twenty-three thousand, seven hundred three".