2185975090 has 64 divisors (see below), whose sum is σ = 4591230336. Its totient is φ = 741952512.

The previous prime is 2185975081. The next prime is 2185975097. The reversal of 2185975090 is 905795812.

It is a self number, because there is not a number n which added to its sum of digits gives 2185975090.

It is not an unprimeable number, because it can be changed into a prime (2185975097) 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 31 ways as a sum of consecutive naturals, for example, 83529 + ... + 106531.

It is an arithmetic number, because the mean of its divisors is an integer number (71737974).

Almost surely, 2^2185975090 is an apocalyptic number.

2185975090 is an abundant number, since it is smaller than the sum of its proper divisors (2405255246).

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

2185975090 is a wasteful number, since it uses less digits than its factorization.

2185975090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083.

The product of its (nonzero) digits is 226800, while the sum is 46.

The square root of 2185975090 is about 46754.4125190340. The cubic root of 2185975090 is about 1297.8218139657.

The spelling of 2185975090 in words is "two billion, one hundred eighty-five million, nine hundred seventy-five thousand, ninety".