18285309188000 has 48 divisors (see below), whose sum is σ = 44927004684744. Its totient is φ = 7314123673600.

The previous prime is 18285309187987. The next prime is 18285309188023. The reversal of 18285309188000 is 88190358281.

It can be written as a sum of positive squares in 4 ways, for example, as 9431851761424 + 8853457426576 = 3071132^2 + 2975476^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2285659649 + ... + 2285667648.

Almost surely, 2^{18285309188000} is an apocalyptic number.

18285309188000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18285309188000 is an abundant number, since it is smaller than the sum of its proper divisors (26641695496744).

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

18285309188000 is an equidigital number, since it uses as much as digits as its factorization.

18285309188000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571327322 (or 4571327304 counting only the distinct ones).

The product of its (nonzero) digits is 1105920, while the sum is 53.

The spelling of 18285309188000 in words is "eighteen trillion, two hundred eighty-five billion, three hundred nine million, one hundred eighty-eight thousand".