166103789 has 2 divisors, whose sum is σ = 166103790. Its totient is φ = 166103788.

The previous prime is 166103783. The next prime is 166103801. The reversal of 166103789 is 987301661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89453764 + 76650025 = 9458^2 + 8755^2 .

It is an emirp because it is prime and its reverse (987301661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166103789 - 2⁸ = 166103533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166103783) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83051894 + 83051895.

It is an arithmetic number, because the mean of its divisors is an integer number (83051895).

Almost surely, 2^166103789 is an apocalyptic number.

It is an amenable number.

166103789 is a deficient number, since it is larger than the sum of its proper divisors (1).

166103789 is an equidigital number, since it uses as much as digits as its factorization.

166103789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 166103789 is about 12888.1258916881. The cubic root of 166103789 is about 549.7009823666.

The spelling of 166103789 in words is "one hundred sixty-six million, one hundred three thousand, seven hundred eighty-nine".