18218732010 has 16 divisors (see below), whose sum is σ = 43724956896. Its totient is φ = 4858328528.

The previous prime is 18218731987. The next prime is 18218732017. The reversal of 18218732010 is 1023781281.

It is not an unprimeable number, because it can be changed into a prime (18218732017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303645504 + ... + 303645563.

It is an arithmetic number, because the mean of its divisors is an integer number (2732809806).

Almost surely, 2^18218732010 is an apocalyptic number.

18218732010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18218732010 is an abundant number, since it is smaller than the sum of its proper divisors (25506224886).

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

18218732010 is a wasteful number, since it uses less digits than its factorization.

18218732010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607291077.

The product of its (nonzero) digits is 5376, while the sum is 33.

The spelling of 18218732010 in words is "eighteen billion, two hundred eighteen million, seven hundred thirty-two thousand, ten".