1144016321 has 4 divisors (see below), whose sum is σ = 1307447232. Its totient is φ = 980585412.

The previous prime is 1144016261. The next prime is 1144016329. The reversal of 1144016321 is 1236104411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1236104411 = 317 ⋅3899383.

It is a cyclic number.

It is not a de Polignac number, because 1144016321 - 2¹⁸ = 1143754177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144016329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81715445 + ... + 81715458.

It is an arithmetic number, because the mean of its divisors is an integer number (326861808).

Almost surely, 2^1144016321 is an apocalyptic number.

It is an amenable number.

1144016321 is a deficient number, since it is larger than the sum of its proper divisors (163430911).

1144016321 is an equidigital number, since it uses as much as digits as its factorization.

1144016321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163430910.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1144016321 is about 33823.3103199554. The cubic root of 1144016321 is about 1045.8692799730.

The spelling of 1144016321 in words is "one billion, one hundred forty-four million, sixteen thousand, three hundred twenty-one".