1163506233 has 16 divisors (see below), whose sum is σ = 1577318400. Its totient is φ = 762762000.

The previous prime is 1163506219. The next prime is 1163506243. The reversal of 1163506233 is 3326053611.

It is a happy number.

It is not a de Polignac number, because 1163506233 - 2⁴ = 1163506217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1163506233.

It is not an unprimeable number, because it can be changed into a prime (1163506213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49708 + ... + 69266.

It is an arithmetic number, because the mean of its divisors is an integer number (98582400).

Almost surely, 2^1163506233 is an apocalyptic number.

It is an amenable number.

1163506233 is a deficient number, since it is larger than the sum of its proper divisors (413812167).

1163506233 is a wasteful number, since it uses less digits than its factorization.

1163506233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892.

The product of its (nonzero) digits is 9720, while the sum is 30.

The square root of 1163506233 is about 34110.2071673568. The cubic root of 1163506233 is about 1051.7751477808.

Adding to 1163506233 its reverse (3326053611), we get a palindrome (4489559844).

The spelling of 1163506233 in words is "one billion, one hundred sixty-three million, five hundred six thousand, two hundred thirty-three".