18055222258 has 16 divisors (see below), whose sum is σ = 27134553600. Its totient is φ = 9010389600.

The previous prime is 18055222253. The next prime is 18055222261. The reversal of 18055222258 is 85222255081.

It is a self number, because there is not a number n which added to its sum of digits gives 18055222258.

It is not an unprimeable number, because it can be changed into a prime (18055222253) 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 7 ways as a sum of consecutive naturals, for example, 2579143 + ... + 2586133.

It is an arithmetic number, because the mean of its divisors is an integer number (1695909600).

Almost surely, 2^18055222258 is an apocalyptic number.

18055222258 is a deficient number, since it is larger than the sum of its proper divisors (9079331342).

18055222258 is a wasteful number, since it uses less digits than its factorization.

18055222258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9273.

The product of its (nonzero) digits is 128000, while the sum is 40.

The spelling of 18055222258 in words is "eighteen billion, fifty-five million, two hundred twenty-two thousand, two hundred fifty-eight".