2164105439 has 2 divisors, whose sum is σ = 2164105440. Its totient is φ = 2164105438.

The previous prime is 2164105429. The next prime is 2164105519. The reversal of 2164105439 is 9345014612.

2164105439 is nontrivially palindromic in base 13.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2164105439 is a prime.

It is a super-2 number, since 2×2164105439² = 9366704702218765442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2164105399 and 2164105408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2164105429) 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 as a sum of consecutive naturals, namely, 1082052719 + 1082052720.

It is an arithmetic number, because the mean of its divisors is an integer number (1082052720).

Almost surely, 2^2164105439 is an apocalyptic number.

2164105439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2164105439 is an equidigital number, since it uses as much as digits as its factorization.

2164105439 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 2164105439 is about 46519.9466788172. The cubic root of 2164105439 is about 1293.4792679427.

The spelling of 2164105439 in words is "two billion, one hundred sixty-four million, one hundred five thousand, four hundred thirty-nine".