18051422 has 8 divisors (see below), whose sum is σ = 27115176. Its totient is φ = 9013032.

The previous prime is 18051413. The next prime is 18051457. The reversal of 18051422 is 22415081.

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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4448 + ... + 7475.

It is an arithmetic number, because the mean of its divisors is an integer number (3389397).

Almost surely, 2^18051422 is an apocalyptic number.

18051422 is a deficient number, since it is larger than the sum of its proper divisors (9063754).

18051422 is a wasteful number, since it uses less digits than its factorization.

18051422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12682.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 18051422 is about 4248.6965059886. The cubic root of 18051422 is about 262.3234646750.

The spelling of 18051422 in words is "eighteen million, fifty-one thousand, four hundred twenty-two".