1444226138 has 32 divisors (see below), whose sum is σ = 2320704000. Its totient is φ = 672061104.

The previous prime is 1444226111. The next prime is 1444226153. The reversal of 1444226138 is 8316224441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1444226098 and 1444226107.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1524581 + ... + 1525527.

It is an arithmetic number, because the mean of its divisors is an integer number (72522000).

Almost surely, 2^1444226138 is an apocalyptic number.

1444226138 is a deficient number, since it is larger than the sum of its proper divisors (876477862).

1444226138 is a wasteful number, since it uses less digits than its factorization.

1444226138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1634.

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

The square root of 1444226138 is about 38002.9753835144. The cubic root of 1444226138 is about 1130.3468635218.

The spelling of 1444226138 in words is "one billion, four hundred forty-four million, two hundred twenty-six thousand, one hundred thirty-eight".