2147968805 has 4 divisors (see below), whose sum is σ = 2577562572. Its totient is φ = 1718375040.

The previous prime is 2147968793. The next prime is 2147968831. The reversal of 2147968805 is 5088697412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1149345604 + 998623201 = 33902^2 + 31601^2 .

It is not a de Polignac number, because 2147968805 - 2²⁰ = 2146920229 is a prime.

It is a super-2 number, since 2×2147968805² = 9227539974506256050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 214796876 + ... + 214796885.

It is an arithmetic number, because the mean of its divisors is an integer number (644390643).

Almost surely, 2^2147968805 is an apocalyptic number.

It is an amenable number.

2147968805 is a deficient number, since it is larger than the sum of its proper divisors (429593767).

2147968805 is an equidigital number, since it uses as much as digits as its factorization.

2147968805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429593766.

The product of its (nonzero) digits is 967680, while the sum is 50.

The square root of 2147968805 is about 46346.1843629009. The cubic root of 2147968805 is about 1290.2563048604.

The spelling of 2147968805 in words is "two billion, one hundred forty-seven million, nine hundred sixty-eight thousand, eight hundred five".