166037873 has 2 divisors, whose sum is σ = 166037874. Its totient is φ = 166037872.

The previous prime is 166037869. The next prime is 166037933. The reversal of 166037873 is 378730661.

166037873 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159340129 + 6697744 = 12623^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 166037873 - 2² = 166037869 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166037873.

It is not a weakly prime, because it can be changed into another prime (169037873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83018936 + 83018937.

It is an arithmetic number, because the mean of its divisors is an integer number (83018937).

Almost surely, 2^166037873 is an apocalyptic number.

It is an amenable number.

166037873 is a deficient number, since it is larger than the sum of its proper divisors (1).

166037873 is an equidigital number, since it uses as much as digits as its factorization.

166037873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 166037873 is about 12885.5684003462. The cubic root of 166037873 is about 549.6282589924.

The spelling of 166037873 in words is "one hundred sixty-six million, thirty-seven thousand, eight hundred seventy-three".