6981219788 has 24 divisors (see below), whose sum is σ = 12348098784. Its totient is φ = 3453248000.

The previous prime is 6981219787. The next prime is 6981219803. The reversal of 6981219788 is 8879121896.

It is not an unprimeable number, because it can be changed into a prime (6981219787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545948 + ... + 558588.

It is an arithmetic number, because the mean of its divisors is an integer number (514504116).

Almost surely, 2^6981219788 is an apocalyptic number.

It is an amenable number.

6981219788 is a deficient number, since it is larger than the sum of its proper divisors (5366878996).

6981219788 is a wasteful number, since it uses less digits than its factorization.

6981219788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113 (or 14111 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 59.

The square root of 6981219788 is about 83553.6940416161. The cubic root of 6981219788 is about 1911.2189242519.

The spelling of 6981219788 in words is "six billion, nine hundred eighty-one million, two hundred nineteen thousand, seven hundred eighty-eight".