1544140044 has 48 divisors (see below), whose sum is σ = 4030236000. Its totient is φ = 511253568.

The previous prime is 1544140027. The next prime is 1544140049. The reversal of 1544140044 is 4400414451.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1544140049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31887 + ... + 64070.

It is an arithmetic number, because the mean of its divisors is an integer number (83963250).

Almost surely, 2^1544140044 is an apocalyptic number.

It is an amenable number.

1544140044 is an abundant number, since it is smaller than the sum of its proper divisors (2486095956).

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

1544140044 is a wasteful number, since it uses less digits than its factorization.

1544140044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96119 (or 96111 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 1544140044 is about 39295.5473813510. The cubic root of 1544140044 is about 1155.8342564383.

Adding to 1544140044 its reverse (4400414451), we get a palindrome (5944554495).

The spelling of 1544140044 in words is "one billion, five hundred forty-four million, one hundred forty thousand, forty-four".