18126330 has 32 divisors (see below), whose sum is σ = 43896384. Its totient is φ = 4790016.

The previous prime is 18126319. The next prime is 18126331. The reversal of 18126330 is 3362181.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18126330.

It is not an unprimeable number, because it can be changed into a prime (18126331) 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 15 ways as a sum of consecutive naturals, for example, 717 + ... + 6063.

It is an arithmetic number, because the mean of its divisors is an integer number (1371762).

Almost surely, 2^18126330 is an apocalyptic number.

18126330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18126330 is an abundant number, since it is smaller than the sum of its proper divisors (25770054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18126330 is a wasteful number, since it uses less digits than its factorization.

18126330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5470.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 18126330 is about 4257.5027891946. The cubic root of 18126330 is about 262.6858185451.

The spelling of 18126330 in words is "eighteen million, one hundred twenty-six thousand, three hundred thirty".