1144565505 has 16 divisors (see below), whose sum is σ = 2034783360. Its totient is φ = 610434864.

The previous prime is 1144565497. The next prime is 1144565549. The reversal of 1144565505 is 5055654411.

1144565505 is a `hidden beast` number, since 1 + 1 + 44 + 565 + 50 + 5 = 666.

It is not a de Polignac number, because 1144565505 - 2³ = 1144565497 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1144565505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4238997 + ... + 4239266.

It is an arithmetic number, because the mean of its divisors is an integer number (127173960).

Almost surely, 2^1144565505 is an apocalyptic number.

1144565505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1144565505 is a deficient number, since it is larger than the sum of its proper divisors (890217855).

1144565505 is an equidigital number, since it uses as much as digits as its factorization.

1144565505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8478277 (or 8478271 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

The square root of 1144565505 is about 33831.4277706395. The cubic root of 1144565505 is about 1046.0366094010.

The spelling of 1144565505 in words is "one billion, one hundred forty-four million, five hundred sixty-five thousand, five hundred five".