1224789938 has 16 divisors (see below), whose sum is σ = 1846126080. Its totient is φ = 609422256.

The previous prime is 1224789931. The next prime is 1224789953. The reversal of 1224789938 is 8399874221.

It is a super-2 number, since 2×1224789938² = 3000220784452087688, 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 1224789938.

It is not an unprimeable number, because it can be changed into a prime (1224789931) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 423983 + ... + 426861.

It is an arithmetic number, because the mean of its divisors is an integer number (115382880).

Almost surely, 2^1224789938 is an apocalyptic number.

1224789938 is a deficient number, since it is larger than the sum of its proper divisors (621336142).

1224789938 is a wasteful number, since it uses less digits than its factorization.

1224789938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3841.

The product of its digits is 1741824, while the sum is 53.

The square root of 1224789938 is about 34996.9989856273. The cubic root of 1224789938 is about 1069.9263168756.

The spelling of 1224789938 in words is "one billion, two hundred twenty-four million, seven hundred eighty-nine thousand, nine hundred thirty-eight".