618220821822 has 16 divisors (see below), whose sum is σ = 1237835613312. Its totient is φ = 205841279000.

The previous prime is 618220821811. The next prime is 618220821847. The reversal of 618220821822 is 228128022816.

It is a super-3 number, since 3×618220821822³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58076304 + ... + 58086947.

It is an arithmetic number, because the mean of its divisors is an integer number (77364725832).

Almost surely, 2^618220821822 is an apocalyptic number.

618220821822 is an abundant number, since it is smaller than the sum of its proper divisors (619614791490).

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

618220821822 is a wasteful number, since it uses less digits than its factorization.

618220821822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116164143.

The product of its (nonzero) digits is 98304, while the sum is 42.

The spelling of 618220821822 in words is "six hundred eighteen billion, two hundred twenty million, eight hundred twenty-one thousand, eight hundred twenty-two".