166129037 has 2 divisors, whose sum is σ = 166129038. Its totient is φ = 166129036.

The previous prime is 166129013. The next prime is 166129039. The reversal of 166129037 is 730921661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161315401 + 4813636 = 12701^2 + 2194^2 .

It is an emirp because it is prime and its reverse (730921661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166129037 - 2¹⁰ = 166128013 is a prime.

Together with 166129039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 166128988 and 166129006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166129039) 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, 83064518 + 83064519.

It is an arithmetic number, because the mean of its divisors is an integer number (83064519).

Almost surely, 2^166129037 is an apocalyptic number.

It is an amenable number.

166129037 is a deficient number, since it is larger than the sum of its proper divisors (1).

166129037 is an equidigital number, since it uses as much as digits as its factorization.

166129037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 166129037 is about 12889.1053607300. The cubic root of 166129037 is about 549.7288327192.

The spelling of 166129037 in words is "one hundred sixty-six million, one hundred twenty-nine thousand, thirty-seven".