1806206978304 has 729 divisors, whose sum is σ = 5840295865131. Its totient is φ = 557363773440.

The previous prime is 1806206978273. The next prime is 1806206978413. The reversal of 1806206978304 is 4038796026081.

The square root of 1806206978304 is 1343952.

It is a perfect power (a square), and thus also a powerful number.

1806206978304 is a `hidden beast` number, since 1 + 8 + 0 + 620 + 6 + 9 + 7 + 8 + 3 + 0 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 166659897600 + 1639547080704 = 408240^2 + 1280448^2 .

It is a tau number, because it is divible by the number of its divisors (729).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 29609950434 + ... + 29609950494.

Almost surely, 2^{1806206978304} is an apocalyptic number.

1806206978304 is the 1343952-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1806206978304

1806206978304 is an abundant number, since it is smaller than the sum of its proper divisors (4034088886827).

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

1806206978304 is an frugal number, since it uses more digits than its factorization.

1806206978304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 1806206978304 in words is "one trillion, eight hundred six billion, two hundred six million, nine hundred seventy-eight thousand, three hundred four".