2128193730 has 64 divisors (see below), whose sum is σ = 6111745920. Its totient is φ = 523862208.

The previous prime is 2128193723. The next prime is 2128193783. The reversal of 2128193730 is 373918212.

2128193730 is a `hidden beast` number, since 2 + 1 + 281 + 9 + 373 + 0 = 666.

2128193730 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2128193730² = 9058417104822625800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299652 + ... + 306671.

It is an arithmetic number, because the mean of its divisors is an integer number (95496030).

Almost surely, 2^2128193730 is an apocalyptic number.

2128193730 is an abundant number, since it is smaller than the sum of its proper divisors (3983552190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2128193730 is a wasteful number, since it uses less digits than its factorization.

2128193730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606352 (or 606346 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 2128193730 is about 46132.3501460743. The cubic root of 2128193730 is about 1286.2845497269.

The spelling of 2128193730 in words is "two billion, one hundred twenty-eight million, one hundred ninety-three thousand, seven hundred thirty".