166343137 has 2 divisors, whose sum is σ = 166343138. Its totient is φ = 166343136.

The previous prime is 166343087. The next prime is 166343161. The reversal of 166343137 is 731343661.

166343137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156850576 + 9492561 = 12524^2 + 3081^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166343137 is a prime.

It is not a weakly prime, because it can be changed into another prime (166341137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83171568 + 83171569.

It is an arithmetic number, because the mean of its divisors is an integer number (83171569).

Almost surely, 2^166343137 is an apocalyptic number.

It is an amenable number.

166343137 is a deficient number, since it is larger than the sum of its proper divisors (1).

166343137 is an equidigital number, since it uses as much as digits as its factorization.

166343137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 34.

The square root of 166343137 is about 12897.4081504774. The cubic root of 166343137 is about 549.9648870146.

Adding to 166343137 its reverse (731343661), we get a palindrome (897686798).

The spelling of 166343137 in words is "one hundred sixty-six million, three hundred forty-three thousand, one hundred thirty-seven".