18318254 has 16 divisors (see below), whose sum is σ = 27941760. Its totient is φ = 9005880.

The previous prime is 18318253. The next prime is 18318257. The reversal of 18318254 is 45281381.

It is a self number, because there is not a number n which added to its sum of digits gives 18318254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18318253) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 36167 + ... + 36669.

It is an arithmetic number, because the mean of its divisors is an integer number (1746360).

Almost surely, 2^18318254 is an apocalyptic number.

18318254 is a deficient number, since it is larger than the sum of its proper divisors (9623506).

18318254 is a wasteful number, since it uses less digits than its factorization.

18318254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775.

The product of its digits is 7680, while the sum is 32.

The square root of 18318254 is about 4279.9829438912. The cubic root of 18318254 is about 263.6096830060.

The spelling of 18318254 in words is "eighteen million, three hundred eighteen thousand, two hundred fifty-four".