2144973265 has 4 divisors (see below), whose sum is σ = 2573967924. Its totient is φ = 1715978608.

The previous prime is 2144973241. The next prime is 2144973277. The reversal of 2144973265 is 5623794412.

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 1541583169 + 603390096 = 39263^2 + 24564^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144973265 - 2¹¹ = 2144971217 is a prime.

It is a Duffinian 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, 214497322 + ... + 214497331.

It is an arithmetic number, because the mean of its divisors is an integer number (643491981).

Almost surely, 2^2144973265 is an apocalyptic number.

It is an amenable number.

2144973265 is a deficient number, since it is larger than the sum of its proper divisors (428994659).

2144973265 is an equidigital number, since it uses as much as digits as its factorization.

2144973265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428994658.

The product of its digits is 362880, while the sum is 43.

The square root of 2144973265 is about 46313.8560800113. The cubic root of 2144973265 is about 1289.6562321371.

The spelling of 2144973265 in words is "two billion, one hundred forty-four million, nine hundred seventy-three thousand, two hundred sixty-five".