2144346385 has 4 divisors (see below), whose sum is σ = 2573215668. Its totient is φ = 1715477104.

The previous prime is 2144346367. The next prime is 2144346389. The reversal of 2144346385 is 5836434412.

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 1146228736 + 998117649 = 33856^2 + 31593^2 .

It is a cyclic number.

It is not a de Polignac number, because 2144346385 - 2¹⁹ = 2143822097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2144346389) 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, 214434634 + ... + 214434643.

It is an arithmetic number, because the mean of its divisors is an integer number (643303917).

Almost surely, 2^2144346385 is an apocalyptic number.

It is an amenable number.

2144346385 is a deficient number, since it is larger than the sum of its proper divisors (428869283).

2144346385 is an equidigital number, since it uses as much as digits as its factorization.

2144346385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428869282.

The product of its digits is 276480, while the sum is 40.

The square root of 2144346385 is about 46307.0878484061. The cubic root of 2144346385 is about 1289.5305835671.

The spelling of 2144346385 in words is "two billion, one hundred forty-four million, three hundred forty-six thousand, three hundred eighty-five".