22742272218 has 8 divisors (see below), whose sum is σ = 45484544448. Its totient is φ = 7580757404.

The previous prime is 22742272213. The next prime is 22742272249. The reversal of 22742272218 is 81227224722.

It is a happy number.

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

22742272218 is an admirable number.

It is a super-2 number, since 2×22742272218² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22742272213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1895189346 + ... + 1895189357.

It is an arithmetic number, because the mean of its divisors is an integer number (5685568056).

Almost surely, 2^22742272218 is an apocalyptic number.

22742272218 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22742272218 is a wasteful number, since it uses less digits than its factorization.

22742272218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3790378708.

The product of its digits is 100352, while the sum is 39.

The spelling of 22742272218 in words is "twenty-two billion, seven hundred forty-two million, two hundred seventy-two thousand, two hundred eighteen".