1444331885 has 8 divisors (see below), whose sum is σ = 1765900440. Its totient is φ = 1133664064.

The previous prime is 1444331879. The next prime is 1444331923. The reversal of 1444331885 is 5881334441.

It can be written as a sum of positive squares in 4 ways, for example, as 136352329 + 1307979556 = 11677^2 + 36166^2 .

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

It is not a de Polignac number, because 1444331885 - 2⁴ = 1444331869 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2724890 + ... + 2725419.

It is an arithmetic number, because the mean of its divisors is an integer number (220737555).

Almost surely, 2^1444331885 is an apocalyptic number.

It is an amenable number.

1444331885 is a deficient number, since it is larger than the sum of its proper divisors (321568555).

1444331885 is an equidigital number, since it uses as much as digits as its factorization.

1444331885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450367.

The product of its digits is 184320, while the sum is 41.

The square root of 1444331885 is about 38004.3666570040. The cubic root of 1444331885 is about 1130.3744510464.

The spelling of 1444331885 in words is "one billion, four hundred forty-four million, three hundred thirty-one thousand, eight hundred eighty-five".