1144503564 has 12 divisors (see below), whose sum is σ = 2670508344. Its totient is φ = 381501184.

The previous prime is 1144503511. The next prime is 1144503583. The reversal of 1144503564 is 4653054411.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47687637 + ... + 47687660.

It is an arithmetic number, because the mean of its divisors is an integer number (222542362).

Almost surely, 2^1144503564 is an apocalyptic number.

It is an amenable number.

1144503564 is an abundant number, since it is smaller than the sum of its proper divisors (1526004780).

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

1144503564 is a wasteful number, since it uses less digits than its factorization.

1144503564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95375304 (or 95375302 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 33.

The square root of 1144503564 is about 33830.5123224583. The cubic root of 1144503564 is about 1046.0177394391.

Adding to 1144503564 its reverse (4653054411), we get a palindrome (5797557975).

The spelling of 1144503564 in words is "one billion, one hundred forty-four million, five hundred three thousand, five hundred sixty-four".