9186478480 has 60 divisors (see below), whose sum is σ = 22120623252. Its totient is φ = 3547855360.

The previous prime is 9186478459. The next prime is 9186478481. The reversal of 9186478480 is 848746819.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 921486736 + 8264991744 = 30356^2 + 90912^2 .

It is a super-2 number, since 2×9186478480² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9186478481) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 991 + ... + 135550.

Almost surely, 2^9186478480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9186478480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11060311626).

9186478480 is an abundant number, since it is smaller than the sum of its proper divisors (12934144772).

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

9186478480 is a wasteful number, since it uses less digits than its factorization.

9186478480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136612 (or 136577 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 55.

The square root of 9186478480 is about 95846.1187529260. The cubic root of 9186478480 is about 2094.3520555346.

The spelling of 9186478480 in words is "nine billion, one hundred eighty-six million, four hundred seventy-eight thousand, four hundred eighty".