166341137 has 2 divisors, whose sum is σ = 166341138. Its totient is φ = 166341136.

The previous prime is 166341127. The next prime is 166341139. The reversal of 166341137 is 731143661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 128346241 + 37994896 = 11329^2 + 6164^2 .

It is a cyclic number.

It is not a de Polignac number, because 166341137 - 2⁴ = 166341121 is a prime.

Together with 166341139, 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 (166341139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83170568 + 83170569.

It is an arithmetic number, because the mean of its divisors is an integer number (83170569).

Almost surely, 2^166341137 is an apocalyptic number.

It is an amenable number.

166341137 is a deficient number, since it is larger than the sum of its proper divisors (1).

166341137 is an equidigital number, since it uses as much as digits as its factorization.

166341137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 166341137 is about 12897.3306152862. The cubic root of 166341137 is about 549.9626828676.

Adding to 166341137 its reverse (731143661), we get a palindrome (897484798).

It can be divided in two parts, 16634 and 1137, that added together give a palindrome (17771).

The spelling of 166341137 in words is "one hundred sixty-six million, three hundred forty-one thousand, one hundred thirty-seven".