2023563809 has 2 divisors, whose sum is σ = 2023563810. Its totient is φ = 2023563808.

The previous prime is 2023563727. The next prime is 2023563911. The reversal of 2023563809 is 9083653202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1424685025 + 598878784 = 37745^2 + 24472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2023563809 is a prime.

It is not a weakly prime, because it can be changed into another prime (2023562809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1011781904 + 1011781905.

It is an arithmetic number, because the mean of its divisors is an integer number (1011781905).

Almost surely, 2^2023563809 is an apocalyptic number.

It is an amenable number.

2023563809 is a deficient number, since it is larger than the sum of its proper divisors (1).

2023563809 is an equidigital number, since it uses as much as digits as its factorization.

2023563809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 2023563809 is about 44984.0394918020. The cubic root of 2023563809 is about 1264.8498332893.

The spelling of 2023563809 in words is "two billion, twenty-three million, five hundred sixty-three thousand, eight hundred nine".