18855422 has 8 divisors (see below), whose sum is σ = 29047656. Its totient is φ = 9172872.

The previous prime is 18855407. The next prime is 18855479. The reversal of 18855422 is 22455881.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127328 + ... + 127475.

It is an arithmetic number, because the mean of its divisors is an integer number (3630957).

Almost surely, 2^18855422 is an apocalyptic number.

18855422 is a deficient number, since it is larger than the sum of its proper divisors (10192234).

18855422 is a wasteful number, since it uses less digits than its factorization.

18855422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254842.

The product of its digits is 25600, while the sum is 35.

The square root of 18855422 is about 4342.2830400608. The cubic root of 18855422 is about 266.1616124576.

The spelling of 18855422 in words is "eighteen million, eight hundred fifty-five thousand, four hundred twenty-two".