1800038019816 has 64 divisors (see below), whose sum is σ = 5001104462400. Its totient is φ = 599892811200.

The previous prime is 1800038019799. The next prime is 1800038019839. The reversal of 1800038019816 is 6189108300081.

1800038019816 is a `hidden beast` number, since 1 + 80 + 0 + 0 + 380 + 198 + 1 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254671 + ... + 1914401.

It is an arithmetic number, because the mean of its divisors is an integer number (78142257225).

Almost surely, 2^{1800038019816} is an apocalyptic number.

It is an amenable number.

1800038019816 is an abundant number, since it is smaller than the sum of its proper divisors (3201066442584).

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

1800038019816 is a wasteful number, since it uses less digits than its factorization.

1800038019816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1664767 (or 1664757 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 45.

The spelling of 1800038019816 in words is "one trillion, eight hundred billion, thirty-eight million, nineteen thousand, eight hundred sixteen".