1444764505 has 8 divisors (see below), whose sum is σ = 1736194824. Its totient is φ = 1154160000.

The previous prime is 1444764491. The next prime is 1444764511. The reversal of 1444764505 is 5054674441.

It can be written as a sum of positive squares in 4 ways, for example, as 797723536 + 647040969 = 28244^2 + 25437^2 .

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

It is not a de Polignac number, because 1444764505 - 2¹⁵ = 1444731737 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202596 + ... + 209605.

It is an arithmetic number, because the mean of its divisors is an integer number (217024353).

Almost surely, 2^1444764505 is an apocalyptic number.

It is an amenable number.

1444764505 is a deficient number, since it is larger than the sum of its proper divisors (291430319).

1444764505 is an equidigital number, since it uses as much as digits as its factorization.

1444764505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412907.

The product of its (nonzero) digits is 268800, while the sum is 40.

The square root of 1444764505 is about 38010.0579452334. The cubic root of 1444764505 is about 1130.4872999428.

The spelling of 1444764505 in words is "one billion, four hundred forty-four million, seven hundred sixty-four thousand, five hundred five".