19129932709 has 2 divisors, whose sum is σ = 19129932710. Its totient is φ = 19129932708.

The previous prime is 19129932671. The next prime is 19129932727. The reversal of 19129932709 is 90723992191.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18841680225 + 288252484 = 137265^2 + 16978^2 .

It is a cyclic number.

It is not a de Polignac number, because 19129932709 - 2⁷ = 19129932581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19129932109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9564966354 + 9564966355.

It is an arithmetic number, because the mean of its divisors is an integer number (9564966355).

Almost surely, 2^19129932709 is an apocalyptic number.

It is an amenable number.

19129932709 is a deficient number, since it is larger than the sum of its proper divisors (1).

19129932709 is an equidigital number, since it uses as much as digits as its factorization.

19129932709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 551124, while the sum is 52.

The spelling of 19129932709 in words is "nineteen billion, one hundred twenty-nine million, nine hundred thirty-two thousand, seven hundred nine".