10809211930 has 24 divisors (see below), whose sum is σ = 21386162196. Its totient is φ = 3930622080.

The previous prime is 10809211901. The next prime is 10809211937. The reversal of 10809211930 is 3911290801.

It can be written as a sum of positive squares in 2 ways, for example, as 9859894209 + 949317721 = 99297^2 + 30811^2 .

It is not an unprimeable number, because it can be changed into a prime (10809211937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4465407 + ... + 4467826.

Almost surely, 2^10809211930 is an apocalyptic number.

10809211930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10809211930 is a deficient number, since it is larger than the sum of its proper divisors (10576950266).

10809211930 is a wasteful number, since it uses less digits than its factorization.

10809211930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8933262 (or 8933251 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 34.

The spelling of 10809211930 in words is "ten billion, eight hundred nine million, two hundred eleven thousand, nine hundred thirty".