2183879825 has 12 divisors (see below), whose sum is σ = 2735931660. Its totient is φ = 1729090560.

The previous prime is 2183879821. The next prime is 2183879827. The reversal of 2183879825 is 5289783812.

It is a happy number.

It is a Cunningham number, because it is equal to 46732²+1.

It can be written as a sum of positive squares in 6 ways, for example, as 1 + 2183879824 = 1^2 + 46732^2 .

It is not a de Polignac number, because 2183879825 - 2² = 2183879821 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2183879821) 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 11 ways as a sum of consecutive naturals, for example, 447860 + ... + 452709.

It is an arithmetic number, because the mean of its divisors is an integer number (227994305).

Almost surely, 2^2183879825 is an apocalyptic number.

2183879825 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2183879825 is a deficient number, since it is larger than the sum of its proper divisors (552051835).

2183879825 is an equidigital number, since it uses as much as digits as its factorization.

2183879825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900676 (or 900671 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 53.

The square root of 2183879825 is about 46732.0000106993. Note that the first 4 decimals coincide. The cubic root of 2183879825 is about 1297.4070257839.

The spelling of 2183879825 in words is "two billion, one hundred eighty-three million, eight hundred seventy-nine thousand, eight hundred twenty-five".