1163123563 has 8 divisors (see below), whose sum is σ = 1336711680. Its totient is φ = 991392360.

The previous prime is 1163123543. The next prime is 1163123569. The reversal of 1163123563 is 3653213611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-1163123563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1163123569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462883 + ... + 465388.

It is an arithmetic number, because the mean of its divisors is an integer number (167088960).

Almost surely, 2^1163123563 is an apocalyptic number.

1163123563 is a deficient number, since it is larger than the sum of its proper divisors (173588117).

1163123563 is an equidigital number, since it uses as much as digits as its factorization.

1163123563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928457.

The product of its digits is 9720, while the sum is 31.

The square root of 1163123563 is about 34104.5973880355. The cubic root of 1163123563 is about 1051.6598276913.

The spelling of 1163123563 in words is "one billion, one hundred sixty-three million, one hundred twenty-three thousand, five hundred sixty-three".