2073662809 has 2 divisors, whose sum is σ = 2073662810. Its totient is φ = 2073662808.

The previous prime is 2073662713. The next prime is 2073662813. The reversal of 2073662809 is 9082663702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1597201225 + 476461584 = 39965^2 + 21828^2 .

It is a cyclic number.

It is not a de Polignac number, because 2073662809 - 2¹¹ = 2073660761 is a prime.

It is not a weakly prime, because it can be changed into another prime (2073662879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1036831404 + 1036831405.

It is an arithmetic number, because the mean of its divisors is an integer number (1036831405).

Almost surely, 2^2073662809 is an apocalyptic number.

It is an amenable number.

2073662809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2073662809 is an equidigital number, since it uses as much as digits as its factorization.

2073662809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 2073662809 is about 45537.4879522356. The cubic root of 2073662809 is about 1275.2031579898.

The spelling of 2073662809 in words is "two billion, seventy-three million, six hundred sixty-two thousand, eight hundred nine".