1053781444 has 9 divisors (see below), whose sum is σ = 1844231151. Its totient is φ = 526858260.

The previous prime is 1053781433. The next prime is 1053781489. The reversal of 1053781444 is 4441873501.

The square root of 1053781444 is 32462.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×1053781444² = 2220910663437450272, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 56809 + ... + 73039.

Almost surely, 2^1053781444 is an apocalyptic number.

1053781444 is the 32462-nd square number.

It is an amenable number.

1053781444 is a deficient number, since it is larger than the sum of its proper divisors (790449707).

1053781444 is an frugal number, since it uses more digits than its factorization.

1053781444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32466 (or 16233 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 37.

The cubic root of 1053781444 is about 1017.6150365664.

It can be divided in two parts, 1053781 and 444, that multiplied together give a palindrome (467878764).

The spelling of 1053781444 in words is "one billion, fifty-three million, seven hundred eighty-one thousand, four hundred forty-four".