2185254928 has 20 divisors (see below), whose sum is σ = 4348363180. Its totient is φ = 1063096704.

The previous prime is 2185254913. The next prime is 2185254947. The reversal of 2185254928 is 8294525812.

It can be written as a sum of positive squares in 2 ways, for example, as 755810064 + 1429444864 = 27492^2 + 37808^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1845063 + ... + 1846246.

It is an arithmetic number, because the mean of its divisors is an integer number (217418159).

Almost surely, 2^2185254928 is an apocalyptic number.

It is an amenable number.

2185254928 is a deficient number, since it is larger than the sum of its proper divisors (2163108252).

2185254928 is a wasteful number, since it uses less digits than its factorization.

2185254928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3691354 (or 3691348 counting only the distinct ones).

The product of its digits is 460800, while the sum is 46.

The square root of 2185254928 is about 46746.7103441515. The cubic root of 2185254928 is about 1297.6792773293.

The spelling of 2185254928 in words is "two billion, one hundred eighty-five million, two hundred fifty-four thousand, nine hundred twenty-eight".