1144215305 has 8 divisors (see below), whose sum is σ = 1373584392. Its totient is φ = 915021568.

The previous prime is 1144215299. The next prime is 1144215323. The reversal of 1144215305 is 5035124411.

It can be written as a sum of positive squares in 4 ways, for example, as 5895184 + 1138320121 = 2428^2 + 33739^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1144215305 - 2⁸ = 1144215049 is a prime.

It is a Duffinian 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, 29024 + ... + 55953.

It is an arithmetic number, because the mean of its divisors is an integer number (171698049).

Almost surely, 2^1144215305 is an apocalyptic number.

It is an amenable number.

1144215305 is a deficient number, since it is larger than the sum of its proper divisors (229369087).

1144215305 is an equidigital number, since it uses as much as digits as its factorization.

1144215305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87675.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 1144215305 is about 33826.2517137208. The cubic root of 1144215305 is about 1045.9299140696.

Adding to 1144215305 its reverse (5035124411), we get a palindrome (6179339716).

The spelling of 1144215305 in words is "one billion, one hundred forty-four million, two hundred fifteen thousand, three hundred five".