1443441641 has 2 divisors, whose sum is σ = 1443441642. Its totient is φ = 1443441640.

The previous prime is 1443441631. The next prime is 1443441677. The reversal of 1443441641 is 1461443441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 729216016 + 714225625 = 27004^2 + 26725^2 .

It is a cyclic number.

It is not a de Polignac number, because 1443441641 - 2³⁰ = 369699817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1443441598 and 1443441607.

It is not a weakly prime, because it can be changed into another prime (1443441631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721720820 + 721720821.

It is an arithmetic number, because the mean of its divisors is an integer number (721720821).

Almost surely, 2^1443441641 is an apocalyptic number.

It is an amenable number.

1443441641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1443441641 is an equidigital number, since it uses as much as digits as its factorization.

1443441641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18432, while the sum is 32.

The square root of 1443441641 is about 37992.6524607061. The cubic root of 1443441641 is about 1130.1421600457.

The spelling of 1443441641 in words is "one billion, four hundred forty-three million, four hundred forty-one thousand, six hundred forty-one".