1444783649 has 4 divisors (see below), whose sum is σ = 1448232240. Its totient is φ = 1441335060.

The previous prime is 1444783631. The next prime is 1444783651. The reversal of 1444783649 is 9463874441.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444783649 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1444783597 and 1444783606.

It is not an unprimeable number, because it can be changed into a prime (1444783349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1723667 + ... + 1724504.

It is an arithmetic number, because the mean of its divisors is an integer number (362058060).

Almost surely, 2^1444783649 is an apocalyptic number.

It is an amenable number.

1444783649 is a deficient number, since it is larger than the sum of its proper divisors (3448591).

1444783649 is an equidigital number, since it uses as much as digits as its factorization.

1444783649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3448590.

The product of its digits is 2322432, while the sum is 50.

The square root of 1444783649 is about 38010.3097724815. The cubic root of 1444783649 is about 1130.4922931333.

The spelling of 1444783649 in words is "one billion, four hundred forty-four million, seven hundred eighty-three thousand, six hundred forty-nine".