2185559272 has 64 divisors (see below), whose sum is σ = 4589222400. Its totient is φ = 968958720.

The previous prime is 2185559269. The next prime is 2185559279. The reversal of 2185559272 is 2729555812.

It is not an unprimeable number, because it can be changed into a prime (2185559279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 445698 + ... + 450574.

It is an arithmetic number, because the mean of its divisors is an integer number (71706600).

Almost surely, 2^2185559272 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 2185559272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2294611200).

2185559272 is an abundant number, since it is smaller than the sum of its proper divisors (2403663128).

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

2185559272 is a wasteful number, since it uses less digits than its factorization.

2185559272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5066 (or 5062 counting only the distinct ones).

The product of its digits is 504000, while the sum is 46.

The square root of 2185559272 is about 46749.9654759231. The cubic root of 2185559272 is about 1297.7395178323.

The spelling of 2185559272 in words is "two billion, one hundred eighty-five million, five hundred fifty-nine thousand, two hundred seventy-two".