19713846718 has 4 divisors (see below), whose sum is σ = 29570770080. Its totient is φ = 9856923358.

The previous prime is 19713846707. The next prime is 19713846721. The reversal of 19713846718 is 81764831791.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4928461678 + ... + 4928461681.

It is an arithmetic number, because the mean of its divisors is an integer number (7392692520).

Almost surely, 2^19713846718 is an apocalyptic number.

19713846718 is a deficient number, since it is larger than the sum of its proper divisors (9856923362).

19713846718 is an equidigital number, since it uses as much as digits as its factorization.

19713846718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9856923361.

The product of its digits is 2032128, while the sum is 55.

The spelling of 19713846718 in words is "nineteen billion, seven hundred thirteen million, eight hundred forty-six thousand, seven hundred eighteen".