220818957819 has 8 divisors (see below), whose sum is σ = 307226376192. Its totient is φ = 140812089000.

The previous prime is 220818957787. The next prime is 220818957829. The reversal of 220818957819 is 918759818022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220818957819 - 2⁵ = 220818957787 is a prime.

It is a super-2 number, since 2×220818957819² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220818957829) 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, 1600137307 + ... + 1600137444.

It is an arithmetic number, because the mean of its divisors is an integer number (38403297024).

Almost surely, 2^220818957819 is an apocalyptic number.

220818957819 is a deficient number, since it is larger than the sum of its proper divisors (86407418373).

220818957819 is a wasteful number, since it uses less digits than its factorization.

220818957819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200274777.

The product of its (nonzero) digits is 5806080, while the sum is 60.

The spelling of 220818957819 in words is "two hundred twenty billion, eight hundred eighteen million, nine hundred fifty-seven thousand, eight hundred nineteen".