19474334609 has 2 divisors, whose sum is σ = 19474334610. Its totient is φ = 19474334608.

The previous prime is 19474334603. The next prime is 19474334641. The reversal of 19474334609 is 90643347491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14271886225 + 5202448384 = 119465^2 + 72128^2 .

It is a cyclic number.

It is not a de Polignac number, because 19474334609 - 2⁸ = 19474334353 is a prime.

It is not a weakly prime, because it can be changed into another prime (19474334603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9737167304 + 9737167305.

It is an arithmetic number, because the mean of its divisors is an integer number (9737167305).

Almost surely, 2^19474334609 is an apocalyptic number.

It is an amenable number.

19474334609 is a deficient number, since it is larger than the sum of its proper divisors (1).

19474334609 is an equidigital number, since it uses as much as digits as its factorization.

19474334609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 19474334609 in words is "nineteen billion, four hundred seventy-four million, three hundred thirty-four thousand, six hundred nine".