18800047801 has 2 divisors, whose sum is σ = 18800047802. Its totient is φ = 18800047800.

The previous prime is 18800047789. The next prime is 18800047807. The reversal of 18800047801 is 10874000881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16191290025 + 2608757776 = 127245^2 + 51076^2 .

It is a cyclic number.

It is not a de Polignac number, because 18800047801 - 2⁹ = 18800047289 is a prime.

It is not a weakly prime, because it can be changed into another prime (18800047807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9400023900 + 9400023901.

It is an arithmetic number, because the mean of its divisors is an integer number (9400023901).

Almost surely, 2^18800047801 is an apocalyptic number.

It is an amenable number.

18800047801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18800047801 is an equidigital number, since it uses as much as digits as its factorization.

18800047801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 37.

The spelling of 18800047801 in words is "eighteen billion, eight hundred million, forty-seven thousand, eight hundred one".