1821795112 has 16 divisors (see below), whose sum is σ = 3454247700. Its totient is φ = 900662400.

The previous prime is 1821795071. The next prime is 1821795113. The reversal of 1821795112 is 2115971281.

It can be written as a sum of positive squares in 2 ways, for example, as 1817657956 + 4137156 = 42634^2 + 2034^2 .

It is not an unprimeable number, because it can be changed into a prime (1821795113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1278639 + ... + 1280062.

Almost surely, 2^1821795112 is an apocalyptic number.

It is an amenable number.

1821795112 is a deficient number, since it is larger than the sum of its proper divisors (1632452588).

1821795112 is a wasteful number, since it uses less digits than its factorization.

1821795112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558796 (or 2558792 counting only the distinct ones).

The product of its digits is 10080, while the sum is 37.

The square root of 1821795112 is about 42682.4918672750. The cubic root of 1821795112 is about 1221.3304289381.

The spelling of 1821795112 in words is "one billion, eight hundred twenty-one million, seven hundred ninety-five thousand, one hundred twelve".