1444444158 has 8 divisors (see below), whose sum is σ = 2888888328. Its totient is φ = 481481384.

The previous prime is 1444444081. The next prime is 1444444159. The reversal of 1444444158 is 8514444441.

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

1444444158 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444444159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120370341 + ... + 120370352.

It is an arithmetic number, because the mean of its divisors is an integer number (361111041).

Almost surely, 2^1444444158 is an apocalyptic number.

1444444158 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444444158 is a wasteful number, since it uses less digits than its factorization.

1444444158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240740698.

The product of its digits is 163840, while the sum is 39.

The square root of 1444444158 is about 38005.8437348785. The cubic root of 1444444158 is about 1130.4037396155.

Adding to 1444444158 its reverse (8514444441), we get a palindrome (9958888599).

The spelling of 1444444158 in words is "one billion, four hundred forty-four million, four hundred forty-four thousand, one hundred fifty-eight".