1144540244 has 12 divisors (see below), whose sum is σ = 2004498804. Its totient is φ = 571826304.

The previous prime is 1144540219. The next prime is 1144540261. The reversal of 1144540244 is 4420454411.

It can be written as a sum of positive squares in 2 ways, for example, as 949379344 + 195160900 = 30812^2 + 13970^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105119 + ... + 115494.

It is an arithmetic number, because the mean of its divisors is an integer number (167041567).

Almost surely, 2^1144540244 is an apocalyptic number.

It is an amenable number.

1144540244 is a deficient number, since it is larger than the sum of its proper divisors (859958560).

1144540244 is a wasteful number, since it uses less digits than its factorization.

1144540244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221914 (or 221912 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 1144540244 is about 33831.0544322816. The cubic root of 1144540244 is about 1046.0289138679.

Adding to 1144540244 its reverse (4420454411), we get a palindrome (5564994655).

The spelling of 1144540244 in words is "one billion, one hundred forty-four million, five hundred forty thousand, two hundred forty-four".