166103129 has 2 divisors, whose sum is σ = 166103130. Its totient is φ = 166103128.

The previous prime is 166103087. The next prime is 166103131. The reversal of 166103129 is 921301661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118810000 + 47293129 = 10900^2 + 6877^2 .

It is a cyclic number.

It is not a de Polignac number, because 166103129 - 2⁸ = 166102873 is a prime.

Together with 166103131, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166103159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83051564 + 83051565.

It is an arithmetic number, because the mean of its divisors is an integer number (83051565).

Almost surely, 2^166103129 is an apocalyptic number.

It is an amenable number.

166103129 is a deficient number, since it is larger than the sum of its proper divisors (1).

166103129 is an equidigital number, since it uses as much as digits as its factorization.

166103129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 166103129 is about 12888.1002866986. The cubic root of 166103129 is about 549.7002543015.

The spelling of 166103129 in words is "one hundred sixty-six million, one hundred three thousand, one hundred twenty-nine".