1144253566 has 4 divisors (see below), whose sum is σ = 1716380352. Its totient is φ = 572126782.

The previous prime is 1144253563. The next prime is 1144253569. The reversal of 1144253566 is 6653524411.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1144253563) and next prime (1144253569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144253563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 286063390 + ... + 286063393.

It is an arithmetic number, because the mean of its divisors is an integer number (429095088).

Almost surely, 2^1144253566 is an apocalyptic number.

1144253566 is a deficient number, since it is larger than the sum of its proper divisors (572126786).

1144253566 is an equidigital number, since it uses as much as digits as its factorization.

1144253566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572126785.

The product of its digits is 86400, while the sum is 37.

The square root of 1144253566 is about 33826.8172608657. The cubic root of 1144253566 is about 1045.9415720964.

Adding to 1144253566 its reverse (6653524411), we get a palindrome (7797777977).

The spelling of 1144253566 in words is "one billion, one hundred forty-four million, two hundred fifty-three thousand, five hundred sixty-six".