1812222041 has 16 divisors (see below), whose sum is σ = 2089152000. Its totient is φ = 1539863808.

The previous prime is 1812222037. The next prime is 1812222053. The reversal of 1812222041 is 1402222181.

It is not a de Polignac number, because 1812222041 - 2² = 1812222037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1812221998 and 1812222016.

It is not an unprimeable number, because it can be changed into a prime (1812222011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 387485 + ... + 392133.

It is an arithmetic number, because the mean of its divisors is an integer number (130572000).

Almost surely, 2^1812222041 is an apocalyptic number.

It is an amenable number.

1812222041 is a deficient number, since it is larger than the sum of its proper divisors (276929959).

1812222041 is a wasteful number, since it uses less digits than its factorization.

1812222041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5128.

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 1812222041 is about 42570.2013267497. The cubic root of 1812222041 is about 1219.1874103806.

It can be divided in two parts, 181 and 2222041, that added together give a palindrome (2222222).

The spelling of 1812222041 in words is "one billion, eight hundred twelve million, two hundred twenty-two thousand, forty-one".