2180225789 has 4 divisors (see below), whose sum is σ = 2491686624. Its totient is φ = 1868764956.

The previous prime is 2180225767. The next prime is 2180225819. The reversal of 2180225789 is 9875220812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180225789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180225189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155730407 + ... + 155730420.

It is an arithmetic number, because the mean of its divisors is an integer number (622921656).

Almost surely, 2^2180225789 is an apocalyptic number.

It is an amenable number.

2180225789 is a deficient number, since it is larger than the sum of its proper divisors (311460835).

2180225789 is an equidigital number, since it uses as much as digits as its factorization.

2180225789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311460834.

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2180225789 is about 46692.8879916417. The cubic root of 2180225789 is about 1296.6830209724.

The spelling of 2180225789 in words is "two billion, one hundred eighty million, two hundred twenty-five thousand, seven hundred eighty-nine".