2018181822 has 16 divisors (see below), whose sum is σ = 4047018240. Its totient is φ = 670951512.

The previous prime is 2018181791. The next prime is 2018181829. The reversal of 2018181822 is 2281818102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2018181829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 441478 + ... + 446025.

It is an arithmetic number, because the mean of its divisors is an integer number (252938640).

Almost surely, 2^2018181822 is an apocalyptic number.

2018181822 is an abundant number, since it is smaller than the sum of its proper divisors (2028836418).

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

2018181822 is a wasteful number, since it uses less digits than its factorization.

2018181822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 887887.

The product of its (nonzero) digits is 4096, while the sum is 33.

The square root of 2018181822 is about 44924.1785901534. The cubic root of 2018181822 is about 1263.7274818244.

Adding to 2018181822 its reverse (2281818102), we get a palindrome (4299999924).

The spelling of 2018181822 in words is "two billion, eighteen million, one hundred eighty-one thousand, eight hundred twenty-two".