2128283816 has 16 divisors (see below), whose sum is σ = 4017316500. Its totient is φ = 1056999424.

The previous prime is 2128283809. The next prime is 2128283819. The reversal of 2128283816 is 6183828212.

It can be written as a sum of positive squares in 2 ways, for example, as 2127976900 + 306916 = 46130^2 + 554^2 .

It is not an unprimeable number, because it can be changed into a prime (2128283819) 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, 891545 + ... + 893928.

Almost surely, 2^2128283816 is an apocalyptic number.

It is an amenable number.

2128283816 is a deficient number, since it is larger than the sum of its proper divisors (1889032684).

2128283816 is a wasteful number, since it uses less digits than its factorization.

2128283816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785628 (or 1785624 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 2128283816 is about 46133.3265221575. The cubic root of 2128283816 is about 1286.3026988570.

The spelling of 2128283816 in words is "two billion, one hundred twenty-eight million, two hundred eighty-three thousand, eight hundred sixteen".