1217623163 has 2 divisors, whose sum is σ = 1217623164. Its totient is φ = 1217623162.

The previous prime is 1217623133. The next prime is 1217623213. The reversal of 1217623163 is 3613267121.

It is a weak prime.

It is an emirp because it is prime and its reverse (3613267121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217623163 - 2⁸ = 1217622907 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217623133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608811581 + 608811582.

It is an arithmetic number, because the mean of its divisors is an integer number (608811582).

Almost surely, 2^1217623163 is an apocalyptic number.

1217623163 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217623163 is an equidigital number, since it uses as much as digits as its factorization.

1217623163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 32.

The square root of 1217623163 is about 34894.4574825287. The cubic root of 1217623163 is about 1067.8353661862.

The spelling of 1217623163 in words is "one billion, two hundred seventeen million, six hundred twenty-three thousand, one hundred sixty-three".