1129638163 has 2 divisors, whose sum is σ = 1129638164. Its totient is φ = 1129638162.

The previous prime is 1129638161. The next prime is 1129638197. The reversal of 1129638163 is 3618369211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1129638163 - 2¹ = 1129638161 is a prime.

Together with 1129638161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1129638161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564819081 + 564819082.

It is an arithmetic number, because the mean of its divisors is an integer number (564819082).

Almost surely, 2^1129638163 is an apocalyptic number.

1129638163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129638163 is an equidigital number, since it uses as much as digits as its factorization.

1129638163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 40.

The square root of 1129638163 is about 33610.0901962491. The cubic root of 1129638163 is about 1041.4692507063.

The spelling of 1129638163 in words is "one billion, one hundred twenty-nine million, six hundred thirty-eight thousand, one hundred sixty-three".