18218010 has 32 divisors (see below), whose sum is σ = 43908480. Its totient is φ = 4837568.

The previous prime is 18217993. The next prime is 18218027. The reversal of 18218010 is 1081281.

It is an interprime number because it is at equal distance from previous prime (18217993) and next prime (18218027).

It is a Curzon 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 15 ways as a sum of consecutive naturals, for example, 6736 + ... + 9044.

It is an arithmetic number, because the mean of its divisors is an integer number (1372140).

Almost surely, 2^18218010 is an apocalyptic number.

18218010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18218010 is an abundant number, since it is smaller than the sum of its proper divisors (25690470).

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

18218010 is a wasteful number, since it uses less digits than its factorization.

18218010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2582.

The product of its (nonzero) digits is 128, while the sum is 21.

The square root of 18218010 is about 4268.2560841636. The cubic root of 18218010 is about 263.1279478835.

Adding to 18218010 its reverse (1081281), we get a palindrome (19299291).

The spelling of 18218010 in words is "eighteen million, two hundred eighteen thousand, ten".