18122386 has 8 divisors (see below), whose sum is σ = 27511344. Its totient is φ = 8951940.

The previous prime is 18122327. The next prime is 18122389. The reversal of 18122386 is 68322181.

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

It is not an unprimeable number, because it can be changed into a prime (18122389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54420 + ... + 54751.

It is an arithmetic number, because the mean of its divisors is an integer number (3438918).

Almost surely, 2^18122386 is an apocalyptic number.

18122386 is a deficient number, since it is larger than the sum of its proper divisors (9388958).

18122386 is a wasteful number, since it uses less digits than its factorization.

18122386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109256.

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

The square root of 18122386 is about 4257.0395816811. The cubic root of 18122386 is about 262.6667650831. Note that the first 3 decimals are identical.

The spelling of 18122386 in words is "eighteen million, one hundred twenty-two thousand, three hundred eighty-six".