18019680853 has 2 divisors, whose sum is σ = 18019680854. Its totient is φ = 18019680852.

The previous prime is 18019680799. The next prime is 18019680869. The reversal of 18019680853 is 35808691081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12625219044 + 5394461809 = 112362^2 + 73447^2 .

It is a cyclic number.

It is not a de Polignac number, because 18019680853 - 2¹⁷ = 18019549781 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18019680797 and 18019680806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18019680353) 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, 9009840426 + 9009840427.

It is an arithmetic number, because the mean of its divisors is an integer number (9009840427).

Almost surely, 2^18019680853 is an apocalyptic number.

It is an amenable number.

18019680853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18019680853 is an equidigital number, since it uses as much as digits as its factorization.

18019680853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 414720, while the sum is 49.

The spelling of 18019680853 in words is "eighteen billion, nineteen million, six hundred eighty thousand, eight hundred fifty-three".