1812824441 has 4 divisors (see below), whose sum is σ = 1818301584. Its totient is φ = 1807347300.

The previous prime is 1812824399. The next prime is 1812824449. The reversal of 1812824441 is 1444282181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1812824441 - 2²⁶ = 1745715577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1812824449) 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, 2738075 + ... + 2738736.

It is an arithmetic number, because the mean of its divisors is an integer number (454575396).

Almost surely, 2^1812824441 is an apocalyptic number.

It is an amenable number.

1812824441 is a deficient number, since it is larger than the sum of its proper divisors (5477143).

1812824441 is an equidigital number, since it uses as much as digits as its factorization.

1812824441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5477142.

The product of its digits is 16384, while the sum is 35.

The square root of 1812824441 is about 42577.2761106203. The cubic root of 1812824441 is about 1219.3224852806.

The spelling of 1812824441 in words is "one billion, eight hundred twelve million, eight hundred twenty-four thousand, four hundred forty-one".