4129128819 has 40 divisors (see below), whose sum is σ = 6375145392. Its totient is φ = 2661603840.

The previous prime is 4129128799. The next prime is 4129128853. The reversal of 4129128819 is 9188219214.

It is not a de Polignac number, because 4129128819 - 2¹⁶ = 4129063283 is a prime.

It is a super-2 number, since 2×4129128819² = 34099409607792669522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4129128859) 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 in 39 ways as a sum of consecutive naturals, for example, 369772 + ... + 380774.

Almost surely, 2^4129128819 is an apocalyptic number.

4129128819 is a deficient number, since it is larger than the sum of its proper divisors (2246016573).

4129128819 is a wasteful number, since it uses less digits than its factorization.

4129128819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11169 (or 11160 counting only the distinct ones).

The product of its digits is 82944, while the sum is 45.

The square root of 4129128819 is about 64258.2976665271. The cubic root of 4129128819 is about 1604.3020705579.

The spelling of 4129128819 in words is "four billion, one hundred twenty-nine million, one hundred twenty-eight thousand, eight hundred nineteen".