19138369297 has 2 divisors, whose sum is σ = 19138369298. Its totient is φ = 19138369296.

The previous prime is 19138369279. The next prime is 19138369303. The reversal of 19138369297 is 79296383191.

Together with previous prime (19138369279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13937219136 + 5201150161 = 118056^2 + 72119^2 .

It is a cyclic number.

It is not a de Polignac number, because 19138369297 - 2⁷ = 19138369169 is a prime.

It is not a weakly prime, because it can be changed into another prime (19138369247) 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, 9569184648 + 9569184649.

It is an arithmetic number, because the mean of its divisors is an integer number (9569184649).

Almost surely, 2^19138369297 is an apocalyptic number.

It is an amenable number.

19138369297 is a deficient number, since it is larger than the sum of its proper divisors (1).

19138369297 is an equidigital number, since it uses as much as digits as its factorization.

19138369297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4408992, while the sum is 58.

The spelling of 19138369297 in words is "nineteen billion, one hundred thirty-eight million, three hundred sixty-nine thousand, two hundred ninety-seven".