1144555663 has 2 divisors, whose sum is σ = 1144555664. Its totient is φ = 1144555662.

The previous prime is 1144555661. The next prime is 1144555747. The reversal of 1144555663 is 3665554411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1144555663 - 2¹ = 1144555661 is a prime.

Together with 1144555661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1144555661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572277831 + 572277832.

It is an arithmetic number, because the mean of its divisors is an integer number (572277832).

Almost surely, 2^1144555663 is an apocalyptic number.

1144555663 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144555663 is an equidigital number, since it uses as much as digits as its factorization.

1144555663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 40.

The square root of 1144555663 is about 33831.2823138586. The cubic root of 1144555663 is about 1046.0336111390.

The spelling of 1144555663 in words is "one billion, one hundred forty-four million, five hundred fifty-five thousand, six hundred sixty-three".