3681574700049 has 27 divisors (see below), whose sum is σ = 5350193877873. Its totient is φ = 2439535900032.

The previous prime is 3681574700017. The next prime is 3681574700051. The reversal of 3681574700049 is 9400074751863.

The square root of 3681574700049 is 1918743.

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

3681574700049 is a `hidden beast` number, since 3 + 6 + 81 + 57 + 470 + 0 + 0 + 49 = 666.

3681574700049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 11512449 + 3681563187600 = 3393^2 + 1918740^2 .

It is not a de Polignac number, because 3681574700049 - 2⁵ = 3681574700017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3681574699968 and 3681574700004.

It is not an unprimeable number, because it can be changed into a prime (3681574700099) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 995825769 + ... + 995829465.

Almost surely, 2^{3681574700049} is an apocalyptic number.

3681574700049 is the 1918743-rd square number.

3681574700049 is the 959372-nd centered octagonal number.

It is an amenable number.

3681574700049 is a deficient number, since it is larger than the sum of its proper divisors (1668619177824).

3681574700049 is an frugal number, since it uses more digits than its factorization.

3681574700049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7746 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 3681574700049 in words is "three trillion, six hundred eighty-one billion, five hundred seventy-four million, seven hundred thousand, forty-nine".