9718461998 has 16 divisors (see below), whose sum is σ = 17384578560. Its totient is φ = 3983965656.

The previous prime is 9718461997. The next prime is 9718462009. The reversal of 9718461998 is 8991648179.

9718461998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 9718461998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9718461997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15090458 + ... + 15091101.

It is an arithmetic number, because the mean of its divisors is an integer number (1086536160).

Almost surely, 2^9718461998 is an apocalyptic number.

9718461998 is a deficient number, since it is larger than the sum of its proper divisors (7666116562).

9718461998 is a wasteful number, since it uses less digits than its factorization.

9718461998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30181591.

The product of its digits is 7838208, while the sum is 62.

The square root of 9718461998 is about 98582.2600572740. The cubic root of 9718461998 is about 2134.0234148427.

The spelling of 9718461998 in words is "nine billion, seven hundred eighteen million, four hundred sixty-one thousand, nine hundred ninety-eight".