1840218203820 has 24 divisors (see below), whose sum is σ = 5152610970864. Its totient is φ = 490724854336.

The previous prime is 1840218203807. The next prime is 1840218203953. The reversal of 1840218203820 is 283028120481.

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, 15335151639 + ... + 15335151758.

It is an arithmetic number, because the mean of its divisors is an integer number (214692123786).

Almost surely, 2^{1840218203820} is an apocalyptic number.

1840218203820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1840218203820 is an abundant number, since it is smaller than the sum of its proper divisors (3312392767044).

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

1840218203820 is a wasteful number, since it uses less digits than its factorization.

1840218203820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30670303409 (or 30670303407 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 39.

The spelling of 1840218203820 in words is "one trillion, eight hundred forty billion, two hundred eighteen million, two hundred three thousand, eight hundred twenty".