19269140129 has 4 divisors (see below), whose sum is σ = 19360463280. Its totient is φ = 19177816980.

The previous prime is 19269140117. The next prime is 19269140131. The reversal of 19269140129 is 92104196291.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19269140129 - 2⁸ = 19269139873 is a prime.

It is a super-2 number, since 2×19269140129² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19269140129.

It is not an unprimeable number, because it can be changed into a prime (19269140929) 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 in 3 ways as a sum of consecutive naturals, for example, 45661259 + ... + 45661680.

It is an arithmetic number, because the mean of its divisors is an integer number (4840115820).

Almost surely, 2^19269140129 is an apocalyptic number.

It is an amenable number.

19269140129 is a deficient number, since it is larger than the sum of its proper divisors (91323151).

19269140129 is an equidigital number, since it uses as much as digits as its factorization.

19269140129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91323150.

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 19269140129 in words is "nineteen billion, two hundred sixty-nine million, one hundred forty thousand, one hundred twenty-nine".