2163443465 has 8 divisors (see below), whose sum is σ = 2666298120. Its totient is φ = 1683977472.

The previous prime is 2163443461. The next prime is 2163443479. The reversal of 2163443465 is 5643443612.

It can be written as a sum of positive squares in 4 ways, for example, as 296252944 + 1867190521 = 17212^2 + 43211^2 .

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 2163443465 - 2² = 2163443461 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2163443461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5846960 + ... + 5847329.

It is an arithmetic number, because the mean of its divisors is an integer number (333287265).

Almost surely, 2^2163443465 is an apocalyptic number.

It is an amenable number.

2163443465 is a deficient number, since it is larger than the sum of its proper divisors (502854655).

2163443465 is a wasteful number, since it uses less digits than its factorization.

2163443465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11694331.

The product of its digits is 207360, while the sum is 38.

The square root of 2163443465 is about 46512.8311866736. The cubic root of 2163443465 is about 1293.3473678745.

The spelling of 2163443465 in words is "two billion, one hundred sixty-three million, four hundred forty-three thousand, four hundred sixty-five".