18279047322 has 24 divisors (see below), whose sum is σ = 40674998676. Its totient is φ = 5928339456.

The previous prime is 18279047287. The next prime is 18279047323. The reversal of 18279047322 is 22374097281.

18279047322 is a `hidden beast` number, since 18 + 279 + 0 + 47 + 322 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18141665481 + 137381841 = 134691^2 + 11721^2 .

It is not an unprimeable number, because it can be changed into a prime (18279047323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13722343 + ... + 13723674.

Almost surely, 2^18279047322 is an apocalyptic number.

18279047322 is an abundant number, since it is smaller than the sum of its proper divisors (22395951354).

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

18279047322 is a wasteful number, since it uses less digits than its factorization.

18279047322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27446062 (or 27446059 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The spelling of 18279047322 in words is "eighteen billion, two hundred seventy-nine million, forty-seven thousand, three hundred twenty-two".