1144643663 has 2 divisors, whose sum is σ = 1144643664. Its totient is φ = 1144643662.

The previous prime is 1144643653. The next prime is 1144643671. The reversal of 1144643663 is 3663464411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1144643663 - 2¹⁸ = 1144381519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144643623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572321831 + 572321832.

It is an arithmetic number, because the mean of its divisors is an integer number (572321832).

Almost surely, 2^1144643663 is an apocalyptic number.

1144643663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144643663 is an equidigital number, since it uses as much as digits as its factorization.

1144643663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 38.

The square root of 1144643663 is about 33832.5828603138. The cubic root of 1144643663 is about 1046.0604188053.

The spelling of 1144643663 in words is "one billion, one hundred forty-four million, six hundred forty-three thousand, six hundred sixty-three".