1224163944 has 48 divisors (see below), whose sum is σ = 3405058020. Its totient is φ = 397025280.

The previous prime is 1224163909. The next prime is 1224163951. The reversal of 1224163944 is 4493614221.

1224163944 is a `hidden beast` number, since 12 + 2 + 4 + 1 + 639 + 4 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1222341444 + 1822500 = 34962^2 + 1350^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1224163899 and 1224163908.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227097 + ... + 232424.

Almost surely, 2^1224163944 is an apocalyptic number.

It is an amenable number.

1224163944 is an abundant number, since it is smaller than the sum of its proper divisors (2180894076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1224163944 is a wasteful number, since it uses less digits than its factorization.

1224163944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459570 (or 459563 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 1224163944 is about 34988.0543042908. The cubic root of 1224163944 is about 1069.7440049071.

The spelling of 1224163944 in words is "one billion, two hundred twenty-four million, one hundred sixty-three thousand, nine hundred forty-four".