10931938906 has 16 divisors (see below), whose sum is σ = 19122926400. Its totient is φ = 4685116380.

The previous prime is 10931938873. The next prime is 10931938943. The reversal of 10931938906 is 60983913901.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 10931938906.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7967200 + ... + 7968571.

It is an arithmetic number, because the mean of its divisors is an integer number (1195182900).

Almost surely, 2^10931938906 is an apocalyptic number.

10931938906 is a deficient number, since it is larger than the sum of its proper divisors (8190987494).

10931938906 is an equidigital number, since it uses as much as digits as its factorization.

10931938906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15935794 (or 15935780 counting only the distinct ones).

The product of its (nonzero) digits is 314928, while the sum is 49.

It can be divided in two parts, 109319 and 38906, that added together give a square (148225 = 385²).

The spelling of 10931938906 in words is "ten billion, nine hundred thirty-one million, nine hundred thirty-eight thousand, nine hundred six".