2144009965 has 8 divisors (see below), whose sum is σ = 2575883520. Its totient is φ = 1713160272.

The previous prime is 2144009867. The next prime is 2144009969. The reversal of 2144009965 is 5699004412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2144009965 - 2⁹ = 2144009453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144009969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251349 + ... + 259738.

It is an arithmetic number, because the mean of its divisors is an integer number (321985440).

Almost surely, 2^2144009965 is an apocalyptic number.

It is an amenable number.

2144009965 is a deficient number, since it is larger than the sum of its proper divisors (431873555).

2144009965 is an equidigital number, since it uses as much as digits as its factorization.

2144009965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511931.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 2144009965 is about 46303.4552166466. The cubic root of 2144009965 is about 1289.4631431929.

The spelling of 2144009965 in words is "two billion, one hundred forty-four million, nine thousand, nine hundred sixty-five".