18801330 has 16 divisors (see below), whose sum is σ = 45123264. Its totient is φ = 5013680.

The previous prime is 18801319. The next prime is 18801331. The reversal of 18801330 is 3310881.

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 18801330.

It is not an unprimeable number, because it can be changed into a prime (18801331) 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, 313326 + ... + 313385.

It is an arithmetic number, because the mean of its divisors is an integer number (2820204).

Almost surely, 2^18801330 is an apocalyptic number.

18801330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18801330 is an abundant number, since it is smaller than the sum of its proper divisors (26321934).

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

18801330 is a wasteful number, since it uses less digits than its factorization.

18801330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626721.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 18801330 is about 4336.0500458366. The cubic root of 18801330 is about 265.9068492496.

The spelling of 18801330 in words is "eighteen million, eight hundred one thousand, three hundred thirty".