2144945705 has 32 divisors (see below), whose sum is σ = 3088592640. Its totient is φ = 1398862080.

The previous prime is 2144945683. The next prime is 2144945711. The reversal of 2144945705 is 5075494412.

It is not a de Polignac number, because 2144945705 - 2¹⁶ = 2144880169 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52235 + ... + 83775.

It is an arithmetic number, because the mean of its divisors is an integer number (96518520).

Almost surely, 2^2144945705 is an apocalyptic number.

It is an amenable number.

2144945705 is a deficient number, since it is larger than the sum of its proper divisors (943646935).

2144945705 is a wasteful number, since it uses less digits than its factorization.

2144945705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31649.

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 2144945705 is about 46313.5585439081. The cubic root of 2144945705 is about 1289.6507086684.

The spelling of 2144945705 in words is "two billion, one hundred forty-four million, nine hundred forty-five thousand, seven hundred five".