1123281163 has 2 divisors, whose sum is σ = 1123281164. Its totient is φ = 1123281162.

The previous prime is 1123281143. The next prime is 1123281191. The reversal of 1123281163 is 3611823211.

It is a happy number.

It is an a-pointer prime, because the next prime (1123281191) can be obtained adding 1123281163 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123281163 - 2²¹ = 1121184011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123281143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561640581 + 561640582.

It is an arithmetic number, because the mean of its divisors is an integer number (561640582).

Almost surely, 2^1123281163 is an apocalyptic number.

1123281163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123281163 is an equidigital number, since it uses as much as digits as its factorization.

1123281163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728, while the sum is 28.

The square root of 1123281163 is about 33515.3869588283. The cubic root of 1123281163 is about 1039.5119637563.

The spelling of 1123281163 in words is "one billion, one hundred twenty-three million, two hundred eighty-one thousand, one hundred sixty-three".