1808940460812 has 24 divisors (see below), whose sum is σ = 4223497510512. Its totient is φ = 602603520000.

The previous prime is 1808940460807. The next prime is 1808940460829. The reversal of 1808940460812 is 2180640498081.

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, 47059189 + ... + 47097612.

It is an arithmetic number, because the mean of its divisors is an integer number (175979062938).

Almost surely, 2^{1808940460812} is an apocalyptic number.

1808940460812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1808940460812 is an abundant number, since it is smaller than the sum of its proper divisors (2414557049700).

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

1808940460812 is a wasteful number, since it uses less digits than its factorization.

1808940460812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94158409 (or 94158407 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 1808940460812 in words is "one trillion, eight hundred eight billion, nine hundred forty million, four hundred sixty thousand, eight hundred twelve".