1223537863 has 2 divisors, whose sum is σ = 1223537864. Its totient is φ = 1223537862.

The previous prime is 1223537849. The next prime is 1223537893. The reversal of 1223537863 is 3687353221.

It is a weak prime.

It is an emirp because it is prime and its reverse (3687353221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223537863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223537893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611768931 + 611768932.

It is an arithmetic number, because the mean of its divisors is an integer number (611768932).

Almost surely, 2^1223537863 is an apocalyptic number.

1223537863 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223537863 is an equidigital number, since it uses as much as digits as its factorization.

1223537863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 1223537863 is about 34979.1060920659. The cubic root of 1223537863 is about 1069.5616054255.

The spelling of 1223537863 in words is "one billion, two hundred twenty-three million, five hundred thirty-seven thousand, eight hundred sixty-three".