2185522007 has 4 divisors (see below), whose sum is σ = 2188127760. Its totient is φ = 2182916256.

The previous prime is 2185521991. The next prime is 2185522013. The reversal of 2185522007 is 7002255812.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2185522007 - 2⁴ = 2185521991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185422007) 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, 1301618 + ... + 1303295.

It is an arithmetic number, because the mean of its divisors is an integer number (547031940).

Almost surely, 2^2185522007 is an apocalyptic number.

2185522007 is a deficient number, since it is larger than the sum of its proper divisors (2605753).

2185522007 is an equidigital number, since it uses as much as digits as its factorization.

2185522007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2605752.

The product of its (nonzero) digits is 11200, while the sum is 32.

The square root of 2185522007 is about 46749.5669177801. The cubic root of 2185522007 is about 1297.7321420638.

Adding to 2185522007 its reverse (7002255812), we get a palindrome (9187777819).

The spelling of 2185522007 in words is "two billion, one hundred eighty-five million, five hundred twenty-two thousand, seven".