19109468129 has 2 divisors, whose sum is σ = 19109468130. Its totient is φ = 19109468128.

The previous prime is 19109468123. The next prime is 19109468179. The reversal of 19109468129 is 92186490191.

It is an a-pointer prime, because the next prime (19109468179) can be obtained adding 19109468129 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17563405729 + 1546062400 = 132527^2 + 39320^2 .

It is a cyclic number.

It is not a de Polignac number, because 19109468129 - 2²⁰ = 19108419553 is a prime.

It is a super-3 number, since 3×19109468129³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (19109468123) 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, 9554734064 + 9554734065.

It is an arithmetic number, because the mean of its divisors is an integer number (9554734065).

Almost surely, 2^19109468129 is an apocalyptic number.

It is an amenable number.

19109468129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19109468129 is an equidigital number, since it uses as much as digits as its factorization.

19109468129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 50.

The spelling of 19109468129 in words is "nineteen billion, one hundred nine million, four hundred sixty-eight thousand, one hundred twenty-nine".