2185948955 has 16 divisors (see below), whose sum is σ = 2762359200. Its totient is φ = 1656023040.

The previous prime is 2185948951. The next prime is 2185948981. The reversal of 2185948955 is 5598495812.

It is a happy number.

2185948955 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2185948955 - 2² = 2185948951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2185948955.

It is not an unprimeable number, because it can be changed into a prime (2185948951) 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, 399035 + ... + 404475.

It is an arithmetic number, because the mean of its divisors is an integer number (172647450).

Almost surely, 2^2185948955 is an apocalyptic number.

2185948955 is a deficient number, since it is larger than the sum of its proper divisors (576410245).

2185948955 is a wasteful number, since it uses less digits than its factorization.

2185948955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9694.

The product of its digits is 5184000, while the sum is 56.

The square root of 2185948955 is about 46754.1330258620. The cubic root of 2185948955 is about 1297.8166417951.

The spelling of 2185948955 in words is "two billion, one hundred eighty-five million, nine hundred forty-eight thousand, nine hundred fifty-five".