1163065020 has 48 divisors (see below), whose sum is σ = 3507090720. Its totient is φ = 286292736.

The previous prime is 1163065009. The next prime is 1163065021. The reversal of 1163065020 is 205603611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1163065021) 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 in 15 ways as a sum of consecutive naturals, for example, 744775 + ... + 746334.

It is an arithmetic number, because the mean of its divisors is an integer number (73064390).

Almost surely, 2^1163065020 is an apocalyptic number.

1163065020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163065020 is an abundant number, since it is smaller than the sum of its proper divisors (2344025700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1163065020 is a wasteful number, since it uses less digits than its factorization.

1163065020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1491134 (or 1491132 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1163065020 is about 34103.7390911906. The cubic root of 1163065020 is about 1051.6421831474.

Adding to 1163065020 its reverse (205603611), we get a palindrome (1368668631).

The spelling of 1163065020 in words is "one billion, one hundred sixty-three million, sixty-five thousand, twenty".