9918789546 has 16 divisors (see below), whose sum is σ = 19840060800. Its totient is φ = 3305849568.

The previous prime is 9918789539. The next prime is 9918789547. The reversal of 9918789546 is 6459878199.

It is a super-2 number, since 2×9918789546² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9918789547) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 49266 + ... + 149213.

It is an arithmetic number, because the mean of its divisors is an integer number (1240003800).

Almost surely, 2^9918789546 is an apocalyptic number.

9918789546 is an abundant number, since it is smaller than the sum of its proper divisors (9921271254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9918789546 is a wasteful number, since it uses less digits than its factorization.

9918789546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206813.

The product of its digits is 39191040, while the sum is 66.

The square root of 9918789546 is about 99593.1199732190. The cubic root of 9918789546 is about 2148.5867435571.

The spelling of 9918789546 in words is "nine billion, nine hundred eighteen million, seven hundred eighty-nine thousand, five hundred forty-six".