2128983916 has 12 divisors (see below), whose sum is σ = 3944882088. Its totient is φ = 1001874752.

The previous prime is 2128983911. The next prime is 2128983971. The reversal of 2128983916 is 6193898212.

It is a self number, because there is not a number n which added to its sum of digits gives 2128983916.

It is not an unprimeable number, because it can be changed into a prime (2128983911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15654226 + ... + 15654361.

It is an arithmetic number, because the mean of its divisors is an integer number (328740174).

Almost surely, 2^2128983916 is an apocalyptic number.

It is an amenable number.

2128983916 is a deficient number, since it is larger than the sum of its proper divisors (1815898172).

2128983916 is a wasteful number, since it uses less digits than its factorization.

2128983916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31308608 (or 31308606 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 2128983916 is about 46140.9136883959. The cubic root of 2128983916 is about 1286.4437266946.

The spelling of 2128983916 in words is "two billion, one hundred twenty-eight million, nine hundred eighty-three thousand, nine hundred sixteen".