19222698187409 has 2 divisors, whose sum is σ = 19222698187410. Its totient is φ = 19222698187408.

The previous prime is 19222698187339. The next prime is 19222698187523. The reversal of 19222698187409 is 90478189622291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18892688151184 + 330010036225 = 4346572^2 + 574465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19222698187409 is a prime.

It is a super-2 number, since 2×19222698187409² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19222698187309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9611349093704 + 9611349093705.

It is an arithmetic number, because the mean of its divisors is an integer number (9611349093705).

Almost surely, 2^{19222698187409} is an apocalyptic number.

It is an amenable number.

19222698187409 is a deficient number, since it is larger than the sum of its proper divisors (1).

19222698187409 is an equidigital number, since it uses as much as digits as its factorization.

19222698187409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62705664, while the sum is 68.

The spelling of 19222698187409 in words is "nineteen trillion, two hundred twenty-two billion, six hundred ninety-eight million, one hundred eighty-seven thousand, four hundred nine".