2066427409 has 2 divisors, whose sum is σ = 2066427410. Its totient is φ = 2066427408.

The previous prime is 2066427397. The next prime is 2066427413. The reversal of 2066427409 is 9047246602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1166427409 + 900000000 = 34153^2 + 30000^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066427409 is a prime.

It is not a weakly prime, because it can be changed into another prime (2066427499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033213704 + 1033213705.

It is an arithmetic number, because the mean of its divisors is an integer number (1033213705).

Almost surely, 2^2066427409 is an apocalyptic number.

It is an amenable number.

2066427409 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066427409 is an equidigital number, since it uses as much as digits as its factorization.

2066427409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 2066427409 is about 45457.9740969613. The cubic root of 2066427409 is about 1273.7182883412.

The spelling of 2066427409 in words is "two billion, sixty-six million, four hundred twenty-seven thousand, four hundred nine".