18354551222 has 12 divisors (see below), whose sum is σ = 32026819140. Its totient is φ = 7866236196.

The previous prime is 18354551203. The next prime is 18354551231. The reversal of 18354551222 is 22215545381.

18354551222 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×18354551222² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 93645572 + ... + 93645767.

It is an arithmetic number, because the mean of its divisors is an integer number (2668901595).

Almost surely, 2^18354551222 is an apocalyptic number.

18354551222 is a deficient number, since it is larger than the sum of its proper divisors (13672267918).

18354551222 is a wasteful number, since it uses less digits than its factorization.

18354551222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187291355 (or 187291348 counting only the distinct ones).

The product of its digits is 96000, while the sum is 38.

The spelling of 18354551222 in words is "eighteen billion, three hundred fifty-four million, five hundred fifty-one thousand, two hundred twenty-two".