1904549042916 has 135 divisors (see below), whose sum is σ = 5219287318973. Its totient is φ = 585584513280.

The previous prime is 1904549042861. The next prime is 1904549042953. The reversal of 1904549042916 is 6192409454091.

The square root of 1904549042916 is 1380054.

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

1904549042916 is a `hidden beast` number, since 1 + 9 + 0 + 4 + 549 + 0 + 4 + 2 + 91 + 6 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 1672764569316 + 231784473600 = 1293354^2 + 481440^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1399374076 + ... + 1399375436.

Almost surely, 2^{1904549042916} is an apocalyptic number.

1904549042916 is the 1380054-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1904549042916

1904549042916 is an abundant number, since it is smaller than the sum of its proper divisors (3314738276057).

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

1904549042916 is an frugal number, since it uses more digits than its factorization.

1904549042916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2784 (or 1379 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 1904549042916 in words is "one trillion, nine hundred four billion, five hundred forty-nine million, forty-two thousand, nine hundred sixteen".