19133197065449 has 2 divisors, whose sum is σ = 19133197065450. Its totient is φ = 19133197065448.

The previous prime is 19133197065391. The next prime is 19133197065487. The reversal of 19133197065449 is 94456079133191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11322094388224 + 7811102677225 = 3364832^2 + 2794835^2 .

It is an emirp because it is prime and its reverse (94456079133191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19133197065449 - 2⁸ = 19133197065193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19133197065391 and 19133197065400.

It is not a weakly prime, because it can be changed into another prime (19133197065149) 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, 9566598532724 + 9566598532725.

It is an arithmetic number, because the mean of its divisors is an integer number (9566598532725).

Almost surely, 2^{19133197065449} is an apocalyptic number.

It is an amenable number.

19133197065449 is a deficient number, since it is larger than the sum of its proper divisors (1).

19133197065449 is an equidigital number, since it uses as much as digits as its factorization.

19133197065449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 19133197065449 in words is "nineteen trillion, one hundred thirty-three billion, one hundred ninety-seven million, sixty-five thousand, four hundred forty-nine".