1123218163 has 2 divisors, whose sum is σ = 1123218164. Its totient is φ = 1123218162.

The previous prime is 1123218149. The next prime is 1123218197. The reversal of 1123218163 is 3618123211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123218163 - 2⁹ = 1123217651 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123218143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561609081 + 561609082.

It is an arithmetic number, because the mean of its divisors is an integer number (561609082).

Almost surely, 2^1123218163 is an apocalyptic number.

1123218163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123218163 is an equidigital number, since it uses as much as digits as its factorization.

1123218163 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 1123218163 is about 33514.4470788345. The cubic root of 1123218163 is about 1039.4925294775.

The spelling of 1123218163 in words is "one billion, one hundred twenty-three million, two hundred eighteen thousand, one hundred sixty-three".