1445044243 has 4 divisors (see below), whose sum is σ = 1445120488. Its totient is φ = 1444968000.

The previous prime is 1445044241. The next prime is 1445044247. The reversal of 1445044243 is 3424405441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3424405441 = 16981 ⋅201661.

It is a cyclic number.

It is not a de Polignac number, because 1445044243 - 2¹ = 1445044241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1445044241) 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, 14755 + ... + 55747.

It is an arithmetic number, because the mean of its divisors is an integer number (361280122).

Almost surely, 2^1445044243 is an apocalyptic number.

1445044243 is a deficient number, since it is larger than the sum of its proper divisors (76245).

1445044243 is an equidigital number, since it uses as much as digits as its factorization.

1445044243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76244.

The product of its (nonzero) digits is 30720, while the sum is 31.

The square root of 1445044243 is about 38013.7375563098. The cubic root of 1445044243 is about 1130.5602575879.

Adding to 1445044243 its reverse (3424405441), we get a palindrome (4869449684).

The spelling of 1445044243 in words is "one billion, four hundred forty-five million, forty-four thousand, two hundred forty-three".