19128312129 has 32 divisors (see below), whose sum is σ = 26176464000. Its totient is φ = 12421209600.

The previous prime is 19128312113. The next prime is 19128312163. The reversal of 19128312129 is 92121382191.

It is not a de Polignac number, because 19128312129 - 2⁴ = 19128312113 is a prime.

It is a super-3 number, since 3×19128312129³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (19128317129) 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 in 31 ways as a sum of consecutive naturals, for example, 11257722 + ... + 11259420.

It is an arithmetic number, because the mean of its divisors is an integer number (818014500).

Almost surely, 2^19128312129 is an apocalyptic number.

It is an amenable number.

19128312129 is a deficient number, since it is larger than the sum of its proper divisors (7048151871).

19128312129 is a wasteful number, since it uses less digits than its factorization.

19128312129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2385.

The product of its digits is 15552, while the sum is 39.

The spelling of 19128312129 in words is "nineteen billion, one hundred twenty-eight million, three hundred twelve thousand, one hundred twenty-nine".