18400074827 has 2 divisors, whose sum is σ = 18400074828. Its totient is φ = 18400074826.

The previous prime is 18400074799. The next prime is 18400074871. The reversal of 18400074827 is 72847000481.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (72847000481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18400074827 - 2⁸ = 18400074571 is a prime.

It is not a weakly prime, because it can be changed into another prime (18400074887) 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, 9200037413 + 9200037414.

It is an arithmetic number, because the mean of its divisors is an integer number (9200037414).

Almost surely, 2^18400074827 is an apocalyptic number.

18400074827 is a deficient number, since it is larger than the sum of its proper divisors (1).

18400074827 is an equidigital number, since it uses as much as digits as its factorization.

18400074827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100352, while the sum is 41.

The spelling of 18400074827 in words is "eighteen billion, four hundred million, seventy-four thousand, eight hundred twenty-seven".