1144633505 has 8 divisors (see below), whose sum is σ = 1387160424. Its totient is φ = 906640000.

The previous prime is 1144633499. The next prime is 1144633513. The reversal of 1144633505 is 5053364411.

It can be written as a sum of positive squares in 4 ways, for example, as 718293601 + 426339904 = 26801^2 + 20648^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1144633505 - 2⁴ = 1144633489 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 1132796 + ... + 1133805.

It is an arithmetic number, because the mean of its divisors is an integer number (173395053).

Almost surely, 2^1144633505 is an apocalyptic number.

It is an amenable number.

1144633505 is a deficient number, since it is larger than the sum of its proper divisors (242526919).

1144633505 is a wasteful number, since it uses less digits than its factorization.

1144633505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2266707.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 1144633505 is about 33832.4327384242. The cubic root of 1144633505 is about 1046.0573244178.

Adding to 1144633505 its reverse (5053364411), we get a palindrome (6197997916).

The spelling of 1144633505 in words is "one billion, one hundred forty-four million, six hundred thirty-three thousand, five hundred five".