3825836849 has 4 divisors (see below), whose sum is σ = 3865278564. Its totient is φ = 3786395136.

The previous prime is 3825836831. The next prime is 3825836851. The reversal of 3825836849 is 9486385283.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1818169600 + 2007667249 = 42640^2 + 44807^2 .

It is a cyclic number.

It is not a de Polignac number, because 3825836849 - 2²⁴ = 3809059633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3825836794 and 3825836803.

It is not an unprimeable number, because it can be changed into a prime (3825836869) 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 3 ways as a sum of consecutive naturals, for example, 19720712 + ... + 19720905.

It is an arithmetic number, because the mean of its divisors is an integer number (966319641).

Almost surely, 2^3825836849 is an apocalyptic number.

It is an amenable number.

3825836849 is a deficient number, since it is larger than the sum of its proper divisors (39441715).

3825836849 is an equidigital number, since it uses as much as digits as its factorization.

3825836849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39441714.

The product of its digits is 9953280, while the sum is 56.

The square root of 3825836849 is about 61853.3495374341. The cubic root of 3825836849 is about 1564.0194463921.

The spelling of 3825836849 in words is "three billion, eight hundred twenty-five million, eight hundred thirty-six thousand, eight hundred forty-nine".