2081844439 has 2 divisors, whose sum is σ = 2081844440. Its totient is φ = 2081844438.

The previous prime is 2081844433. The next prime is 2081844449. The reversal of 2081844439 is 9344481802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2081844439 - 2⁷ = 2081844311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2081844395 and 2081844404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2081844433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1040922219 + 1040922220.

It is an arithmetic number, because the mean of its divisors is an integer number (1040922220).

Almost surely, 2^2081844439 is an apocalyptic number.

2081844439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2081844439 is an equidigital number, since it uses as much as digits as its factorization.

2081844439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The square root of 2081844439 is about 45627.2335234123. The cubic root of 2081844439 is about 1276.8780604743.

The spelling of 2081844439 in words is "two billion, eighty-one million, eight hundred forty-four thousand, four hundred thirty-nine".