1843216225 has 24 divisors (see below), whose sum is σ = 2307566592. Its totient is φ = 1460462400.

The previous prime is 1843216223. The next prime is 1843216247. The reversal of 1843216225 is 5226123481.

It is not a de Polignac number, because 1843216225 - 2¹ = 1843216223 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1843216223) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1560135 + ... + 1561315.

It is an arithmetic number, because the mean of its divisors is an integer number (96148608).

Almost surely, 2^1843216225 is an apocalyptic number.

It is an amenable number.

1843216225 is a deficient number, since it is larger than the sum of its proper divisors (464350367).

1843216225 is a wasteful number, since it uses less digits than its factorization.

1843216225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1737 (or 1732 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 1843216225 is about 42932.6941269704. The cubic root of 1843216225 is about 1226.0986894379.

The spelling of 1843216225 in words is "one billion, eight hundred forty-three million, two hundred sixteen thousand, two hundred twenty-five".