2128461793 has 4 divisors (see below), whose sum is σ = 2128801840. Its totient is φ = 2128121748.

The previous prime is 2128461763. The next prime is 2128461809. The reversal of 2128461793 is 3971648212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2128461793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2128461703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160455 + ... + 173212.

It is an arithmetic number, because the mean of its divisors is an integer number (532200460).

Almost surely, 2^2128461793 is an apocalyptic number.

It is an amenable number.

2128461793 is a deficient number, since it is larger than the sum of its proper divisors (340047).

2128461793 is an equidigital number, since it uses as much as digits as its factorization.

2128461793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340046.

The product of its digits is 145152, while the sum is 43.

The square root of 2128461793 is about 46135.2554235912. The cubic root of 2128461793 is about 1286.3385533974.

The spelling of 2128461793 in words is "two billion, one hundred twenty-eight million, four hundred sixty-one thousand, seven hundred ninety-three".