18914422 has 8 divisors (see below), whose sum is σ = 28407456. Its totient is φ = 9445272.

The previous prime is 18914419. The next prime is 18914449. The reversal of 18914422 is 22441981.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3838 + ... + 7249.

It is an arithmetic number, because the mean of its divisors is an integer number (3550932).

Almost surely, 2^18914422 is an apocalyptic number.

18914422 is a deficient number, since it is larger than the sum of its proper divisors (9493034).

18914422 is a wasteful number, since it uses less digits than its factorization.

18914422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942.

The product of its digits is 4608, while the sum is 31.

The square root of 18914422 is about 4349.0713951371. The cubic root of 18914422 is about 266.4389364792.

The spelling of 18914422 in words is "eighteen million, nine hundred fourteen thousand, four hundred twenty-two".