2129689372 has 12 divisors (see below), whose sum is σ = 3727508400. Its totient is φ = 1064686976.

The previous prime is 2129689357. The next prime is 2129689381. The reversal of 2129689372 is 2739869212.

It is a congruent number.

It is an unprimeable number.

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, 5872 + ... + 65527.

It is an arithmetic number, because the mean of its divisors is an integer number (310625700).

Almost surely, 2^2129689372 is an apocalyptic number.

It is an amenable number.

2129689372 is a deficient number, since it is larger than the sum of its proper divisors (1597819028).

2129689372 is a wasteful number, since it uses less digits than its factorization.

2129689372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78860 (or 78858 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 2129689372 is about 46148.5576372653. The cubic root of 2129689372 is about 1286.5858021730.

The spelling of 2129689372 in words is "two billion, one hundred twenty-nine million, six hundred eighty-nine thousand, three hundred seventy-two".