1813922224 has 20 divisors (see below), whose sum is σ = 3515158944. Its totient is φ = 906784448.

The previous prime is 1813922207. The next prime is 1813922233. The reversal of 1813922224 is 4222293181.

It is a happy number.

It is a super-2 number, since 2×1813922224² = 6580627669442212352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1813922224.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 122889 + ... + 136855.

Almost surely, 2^1813922224 is an apocalyptic number.

It is an amenable number.

1813922224 is a deficient number, since it is larger than the sum of its proper divisors (1701236720).

1813922224 is a wasteful number, since it uses less digits than its factorization.

1813922224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22092 (or 22086 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 1813922224 is about 42590.1658132485. The cubic root of 1813922224 is about 1219.5685619485.

The spelling of 1813922224 in words is "one billion, eight hundred thirteen million, nine hundred twenty-two thousand, two hundred twenty-four".