19390000067 has 2 divisors, whose sum is σ = 19390000068. Its totient is φ = 19390000066.

The previous prime is 19390000057. The next prime is 19390000087. The reversal of 19390000067 is 76000009391.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19390000067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19389999991 and 19390000036.

It is not a weakly prime, because it can be changed into another prime (19390000027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9695000033 + 9695000034.

It is an arithmetic number, because the mean of its divisors is an integer number (9695000034).

Almost surely, 2^19390000067 is an apocalyptic number.

19390000067 is a deficient number, since it is larger than the sum of its proper divisors (1).

19390000067 is an equidigital number, since it uses as much as digits as its factorization.

19390000067 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The spelling of 19390000067 in words is "nineteen billion, three hundred ninety million, sixty-seven", and thus it is an aban number.