18903322131853 has 2 divisors, whose sum is σ = 18903322131854. Its totient is φ = 18903322131852.

The previous prime is 18903322131833. The next prime is 18903322131893. The reversal of 18903322131853 is 35813122330981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18863273316969 + 40048814884 = 4343187^2 + 200122^2 .

It is a cyclic number.

It is not a de Polignac number, because 18903322131853 - 2²⁹ = 18902785260941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18903322131797 and 18903322131806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18903322131833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9451661065926 + 9451661065927.

It is an arithmetic number, because the mean of its divisors is an integer number (9451661065927).

Almost surely, 2^{18903322131853} is an apocalyptic number.

It is an amenable number.

18903322131853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18903322131853 is an equidigital number, since it uses as much as digits as its factorization.

18903322131853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 18903322131853 in words is "eighteen trillion, nine hundred three billion, three hundred twenty-two million, one hundred thirty-one thousand, eight hundred fifty-three".