6981823906 has 16 divisors (see below), whose sum is σ = 10857795840. Its totient is φ = 3363542640.

The previous prime is 6981823897. The next prime is 6981823913. The reversal of 6981823906 is 6093281896.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231676 + ... + 260071.

It is an arithmetic number, because the mean of its divisors is an integer number (678612240).

Almost surely, 2^6981823906 is an apocalyptic number.

6981823906 is a deficient number, since it is larger than the sum of its proper divisors (3875971934).

6981823906 is a wasteful number, since it uses less digits than its factorization.

6981823906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 492009.

The product of its (nonzero) digits is 1119744, while the sum is 52.

The square root of 6981823906 is about 83557.3091117707. The cubic root of 6981823906 is about 1911.2740516025.

The spelling of 6981823906 in words is "six billion, nine hundred eighty-one million, eight hundred twenty-three thousand, nine hundred six".