1144312536 has 16 divisors (see below), whose sum is σ = 2860781400. Its totient is φ = 381437504.

The previous prime is 1144312489. The next prime is 1144312549. The reversal of 1144312536 is 6352134411.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 23839821 + ... + 23839868.

Almost surely, 2^1144312536 is an apocalyptic number.

It is an amenable number.

1144312536 is an abundant number, since it is smaller than the sum of its proper divisors (1716468864).

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

1144312536 is a wasteful number, since it uses less digits than its factorization.

1144312536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47679698 (or 47679694 counting only the distinct ones).

The product of its digits is 8640, while the sum is 30.

The square root of 1144312536 is about 33827.6888953413. The cubic root of 1144312536 is about 1045.9595395927.

Adding to 1144312536 its reverse (6352134411), we get a palindrome (7496446947).

The spelling of 1144312536 in words is "one billion, one hundred forty-four million, three hundred twelve thousand, five hundred thirty-six".