1224446138 has 8 divisors (see below), whose sum is σ = 1838623860. Its totient is φ = 611571520.

The previous prime is 1224446137. The next prime is 1224446141. The reversal of 1224446138 is 8316444221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1099386649 + 125059489 = 33157^2 + 11183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1224446098 and 1224446107.

It is not an unprimeable number, because it can be changed into a prime (1224446137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323423 + ... + 327186.

Almost surely, 2^1224446138 is an apocalyptic number.

1224446138 is a deficient number, since it is larger than the sum of its proper divisors (614177722).

1224446138 is an equidigital number, since it uses as much as digits as its factorization.

1224446138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651552.

The product of its digits is 36864, while the sum is 35.

The square root of 1224446138 is about 34992.0867911589. The cubic root of 1224446138 is about 1069.8261976417.

The spelling of 1224446138 in words is "one billion, two hundred twenty-four million, four hundred forty-six thousand, one hundred thirty-eight".