2127968809 has 4 divisors (see below), whose sum is σ = 2220489216. Its totient is φ = 2035448404.

The previous prime is 2127968807. The next prime is 2127968819. The reversal of 2127968809 is 9088697212.

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 not a de Polignac number, because 2127968809 - 2¹ = 2127968807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2127968807) 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, 46260169 + ... + 46260214.

It is an arithmetic number, because the mean of its divisors is an integer number (555122304).

Almost surely, 2^2127968809 is an apocalyptic number.

It is an amenable number.

2127968809 is a deficient number, since it is larger than the sum of its proper divisors (92520407).

2127968809 is an equidigital number, since it uses as much as digits as its factorization.

2127968809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92520406.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 2127968809 is about 46129.9123021061. The cubic root of 2127968809 is about 1286.2392338962.

The spelling of 2127968809 in words is "two billion, one hundred twenty-seven million, nine hundred sixty-eight thousand, eight hundred nine".