1224144016 has 10 divisors (see below), whose sum is σ = 2371779062. Its totient is φ = 612072000.

The previous prime is 1224143993. The next prime is 1224144017. The reversal of 1224144016 is 6104414221.

It can be written as a sum of positive squares in only one way, i.e., 900000000 + 324144016 = 30000^2 + 18004^2 .

It is not an unprimeable number, because it can be changed into a prime (1224144017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38254485 + ... + 38254516.

Almost surely, 2^1224144016 is an apocalyptic number.

1224144016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1224144016 is a deficient number, since it is larger than the sum of its proper divisors (1147635046).

1224144016 is an equidigital number, since it uses as much as digits as its factorization.

1224144016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76509009 (or 76509003 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1224144016 is about 34987.7695202195. The cubic root of 1224144016 is about 1069.7382001360.

Adding to 1224144016 its reverse (6104414221), we get a palindrome (7328558237).

The spelling of 1224144016 in words is "one billion, two hundred twenty-four million, one hundred forty-four thousand, sixteen".