1670305873 has 2 divisors, whose sum is σ = 1670305874. Its totient is φ = 1670305872.

The previous prime is 1670305853. The next prime is 1670305877. The reversal of 1670305873 is 3785030761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1607769409 + 62536464 = 40097^2 + 7908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670305873 - 2⁹ = 1670305361 is a prime.

It is not a weakly prime, because it can be changed into another prime (1670305877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 835152936 + 835152937.

It is an arithmetic number, because the mean of its divisors is an integer number (835152937).

Almost surely, 2^1670305873 is an apocalyptic number.

It is an amenable number.

1670305873 is a deficient number, since it is larger than the sum of its proper divisors (1).

1670305873 is an equidigital number, since it uses as much as digits as its factorization.

1670305873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 1670305873 is about 40869.3757353841. The cubic root of 1670305873 is about 1186.4934254087.

The spelling of 1670305873 in words is "one billion, six hundred seventy million, three hundred five thousand, eight hundred seventy-three".