2018611223 has 4 divisors (see below), whose sum is σ = 2020967520. Its totient is φ = 2016254928.

The previous prime is 2018611219. The next prime is 2018611241. The reversal of 2018611223 is 3221168102.

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 2018611223 - 2² = 2018611219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2018611192 and 2018611201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018611423) 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 3 ways as a sum of consecutive naturals, for example, 1176863 + ... + 1178576.

It is an arithmetic number, because the mean of its divisors is an integer number (505241880).

Almost surely, 2^2018611223 is an apocalyptic number.

2018611223 is a deficient number, since it is larger than the sum of its proper divisors (2356297).

2018611223 is an equidigital number, since it uses as much as digits as its factorization.

2018611223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356296.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 2018611223 is about 44928.9575107191. The cubic root of 2018611223 is about 1263.8171016591.

Adding to 2018611223 its reverse (3221168102), we get a palindrome (5239779325).

The spelling of 2018611223 in words is "two billion, eighteen million, six hundred eleven thousand, two hundred twenty-three".