1224722018 has 16 divisors (see below), whose sum is σ = 1988347200. Its totient is φ = 562413456.

The previous prime is 1224722017. The next prime is 1224722033. The reversal of 1224722018 is 8102274221.

It is not an unprimeable number, because it can be changed into a prime (1224722017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113180 + ... + 123527.

It is an arithmetic number, because the mean of its divisors is an integer number (124271700).

Almost surely, 2^1224722018 is an apocalyptic number.

1224722018 is a deficient number, since it is larger than the sum of its proper divisors (763625182).

1224722018 is a wasteful number, since it uses less digits than its factorization.

1224722018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236921.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 1224722018 is about 34996.0286032573. The cubic root of 1224722018 is about 1069.9065391335.

Adding to 1224722018 its reverse (8102274221), we get a palindrome (9326996239).

The spelling of 1224722018 in words is "one billion, two hundred twenty-four million, seven hundred twenty-two thousand, eighteen".