2163265439 has 4 divisors (see below), whose sum is σ = 2163573624. Its totient is φ = 2162957256.

The previous prime is 2163265409. The next prime is 2163265459. The reversal of 2163265439 is 9345623612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2163265439 - 2⁸ = 2163265183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2163265396 and 2163265405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2163265409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 143312 + ... + 157685.

It is an arithmetic number, because the mean of its divisors is an integer number (540893406).

Almost surely, 2^2163265439 is an apocalyptic number.

2163265439 is a deficient number, since it is larger than the sum of its proper divisors (308185).

2163265439 is an equidigital number, since it uses as much as digits as its factorization.

2163265439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308184.

The product of its digits is 233280, while the sum is 41.

The square root of 2163265439 is about 46510.9174173118. The cubic root of 2163265439 is about 1293.3118911329.

The spelling of 2163265439 in words is "two billion, one hundred sixty-three million, two hundred sixty-five thousand, four hundred thirty-nine".