1444038381 has 8 divisors (see below), whose sum is σ = 2139316160. Its totient is φ = 962692236.

The previous prime is 1444038367. The next prime is 1444038397. The reversal of 1444038381 is 1838304441.

It is not a de Polignac number, because 1444038381 - 2⁶ = 1444038317 is a prime.

It is a super-2 number, since 2×1444038381² = 4170493691602202322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444038301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26741425 + ... + 26741478.

It is an arithmetic number, because the mean of its divisors is an integer number (267414520).

Almost surely, 2^1444038381 is an apocalyptic number.

It is an amenable number.

1444038381 is a deficient number, since it is larger than the sum of its proper divisors (695277779).

1444038381 is an equidigital number, since it uses as much as digits as its factorization.

1444038381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53482912 (or 53482906 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1444038381 is about 38000.5050098022. The cubic root of 1444038381 is about 1130.2978777182.

The spelling of 1444038381 in words is "one billion, four hundred forty-four million, thirty-eight thousand, three hundred eighty-one".