2129711919 has 12 divisors (see below), whose sum is σ = 2996936856. Its totient is φ = 1345080528.

The previous prime is 2129711891. The next prime is 2129711923. The reversal of 2129711919 is 9191179212.

It is not a de Polignac number, because 2129711919 - 2¹¹ = 2129709871 is a prime.

It is a super-2 number, since 2×2129711919² = 9071345715861325122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129711959) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 982164 + ... + 984329.

It is an arithmetic number, because the mean of its divisors is an integer number (249744738).

Almost surely, 2^2129711919 is an apocalyptic number.

2129711919 is a deficient number, since it is larger than the sum of its proper divisors (867224937).

2129711919 is a wasteful number, since it uses less digits than its factorization.

2129711919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966534 (or 1966515 counting only the distinct ones).

The product of its digits is 20412, while the sum is 42.

The square root of 2129711919 is about 46148.8019237770. The cubic root of 2129711919 is about 1286.5903425140.

The spelling of 2129711919 in words is "two billion, one hundred twenty-nine million, seven hundred eleven thousand, nine hundred nineteen".