166737089 has 2 divisors, whose sum is σ = 166737090. Its totient is φ = 166737088.

The previous prime is 166737073. The next prime is 166737167. The reversal of 166737089 is 980737661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103693489 + 63043600 = 10183^2 + 7940^2 .

It is an emirp because it is prime and its reverse (980737661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166737089 - 2⁴ = 166737073 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (166730089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83368544 + 83368545.

It is an arithmetic number, because the mean of its divisors is an integer number (83368545).

Almost surely, 2^166737089 is an apocalyptic number.

It is an amenable number.

166737089 is a deficient number, since it is larger than the sum of its proper divisors (1).

166737089 is an equidigital number, since it uses as much as digits as its factorization.

166737089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 166737089 is about 12912.6716445513. The cubic root of 166737089 is about 550.3987070419.

The spelling of 166737089 in words is "one hundred sixty-six million, seven hundred thirty-seven thousand, eighty-nine".