2185478560 has 24 divisors (see below), whose sum is σ = 5163193476. Its totient is φ = 874191360.

The previous prime is 2185478557. The next prime is 2185478567. The reversal of 2185478560 is 658745812.

It can be written as a sum of positive squares in 2 ways, for example, as 2154073744 + 31404816 = 46412^2 + 5604^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2185478560.

It is not an unprimeable number, because it can be changed into a prime (2185478567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6829461 + ... + 6829780.

Almost surely, 2^2185478560 is an apocalyptic number.

2185478560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2185478560 is an abundant number, since it is smaller than the sum of its proper divisors (2977714916).

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

2185478560 is a wasteful number, since it uses less digits than its factorization.

2185478560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659256 (or 13659248 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 46.

The square root of 2185478560 is about 46749.1022373692. The cubic root of 2185478560 is about 1297.7235426016.

The spelling of 2185478560 in words is "two billion, one hundred eighty-five million, four hundred seventy-eight thousand, five hundred sixty".