2129880436 has 12 divisors (see below), whose sum is σ = 3779788320. Its totient is φ = 1049940920.

The previous prime is 2129880421. The next prime is 2129880461. The reversal of 2129880436 is 6340889212.

It is a junction number, because it is equal to n+sod(n) for n = 2129880392 and 2129880401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3749506 + ... + 3750073.

It is an arithmetic number, because the mean of its divisors is an integer number (314982360).

Almost surely, 2^2129880436 is an apocalyptic number.

It is an amenable number.

2129880436 is a deficient number, since it is larger than the sum of its proper divisors (1649907884).

2129880436 is a wasteful number, since it uses less digits than its factorization.

2129880436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7499654 (or 7499652 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 2129880436 is about 46150.6276880391. The cubic root of 2129880436 is about 1286.6242761530.

The spelling of 2129880436 in words is "two billion, one hundred twenty-nine million, eight hundred eighty thousand, four hundred thirty-six".