18247670897 has 2 divisors, whose sum is σ = 18247670898. Its totient is φ = 18247670896.

The previous prime is 18247670827. The next prime is 18247670911. The reversal of 18247670897 is 79807674281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17962432576 + 285238321 = 134024^2 + 16889^2 .

It is a cyclic number.

It is not a de Polignac number, because 18247670897 - 2⁸ = 18247670641 is a prime.

It is not a weakly prime, because it can be changed into another prime (18247670827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9123835448 + 9123835449.

It is an arithmetic number, because the mean of its divisors is an integer number (9123835449).

Almost surely, 2^18247670897 is an apocalyptic number.

It is an amenable number.

18247670897 is a deficient number, since it is larger than the sum of its proper divisors (1).

18247670897 is an equidigital number, since it uses as much as digits as its factorization.

18247670897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 18247670897 in words is "eighteen billion, two hundred forty-seven million, six hundred seventy thousand, eight hundred ninety-seven".