18418418518350 has 48 divisors (see below), whose sum is σ = 47151151418880. Its totient is φ = 4753140261600.

The previous prime is 18418418518333. The next prime is 18418418518351. The reversal of 18418418518350 is 5381581481481.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18418418518351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1980470460 + ... + 1980479759.

It is an arithmetic number, because the mean of its divisors is an integer number (982315654560).

Almost surely, 2^{18418418518350} is an apocalyptic number.

18418418518350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18418418518350 is an abundant number, since it is smaller than the sum of its proper divisors (28732732900530).

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

18418418518350 is a wasteful number, since it uses less digits than its factorization.

18418418518350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960950265 (or 3960950260 counting only the distinct ones).

The product of its (nonzero) digits is 4915200, while the sum is 57.

The spelling of 18418418518350 in words is "eighteen trillion, four hundred eighteen billion, four hundred eighteen million, five hundred eighteen thousand, three hundred fifty".