2180235163 has 4 divisors (see below), whose sum is σ = 2180573928. Its totient is φ = 2179896400.

The previous prime is 2180235073. The next prime is 2180235209. The reversal of 2180235163 is 3615320812.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2180235163 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180235763) 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, 159538 + ... + 172663.

It is an arithmetic number, because the mean of its divisors is an integer number (545143482).

Almost surely, 2^2180235163 is an apocalyptic number.

2180235163 is a deficient number, since it is larger than the sum of its proper divisors (338765).

2180235163 is an equidigital number, since it uses as much as digits as its factorization.

2180235163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338764.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 2180235163 is about 46692.9883708464. The cubic root of 2180235163 is about 1296.6848793563.

Adding to 2180235163 its reverse (3615320812), we get a palindrome (5795555975).

It can be divided in two parts, 21802 and 35163, that added together give a palindrome (56965).

The spelling of 2180235163 in words is "two billion, one hundred eighty million, two hundred thirty-five thousand, one hundred sixty-three".