166536157 has 2 divisors, whose sum is σ = 166536158. Its totient is φ = 166536156.

The previous prime is 166536143. The next prime is 166536163. The reversal of 166536157 is 751635661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139381636 + 27154521 = 11806^2 + 5211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166536157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166536127) 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, 83268078 + 83268079.

It is an arithmetic number, because the mean of its divisors is an integer number (83268079).

Almost surely, 2^166536157 is an apocalyptic number.

It is an amenable number.

166536157 is a deficient number, since it is larger than the sum of its proper divisors (1).

166536157 is an equidigital number, since it uses as much as digits as its factorization.

166536157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 166536157 is about 12904.8888798006. Note that the first 4 decimals coincide. The cubic root of 166536157 is about 550.1775261639.

The spelling of 166536157 in words is "one hundred sixty-six million, five hundred thirty-six thousand, one hundred fifty-seven".