3927210194961 has 63 divisors (see below), whose sum is σ = 6215942560089. Its totient is φ = 2479701204072.

The previous prime is 3927210194933. The next prime is 3927210195019. The reversal of 3927210194961 is 1694910127293.

The square root of 3927210194961 is 1981719.

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

3927210194961 is a `hidden beast` number, since 392 + 7 + 2 + 1 + 0 + 194 + 9 + 61 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-3927210194961 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3927210194898 and 3927210194907.

It is not an unprimeable number, because it can be changed into a prime (3927210194261) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 1016619916 + ... + 1016623778.

Almost surely, 2^{3927210194961} is an apocalyptic number.

3927210194961 is the 1981719-th square number.

3927210194961 is the 990860-th centered octagonal number.

It is an amenable number.

3927210194961 is a deficient number, since it is larger than the sum of its proper divisors (2288732365128).

3927210194961 is an frugal number, since it uses more digits than its factorization.

3927210194961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7782 (or 3885 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 54.

The spelling of 3927210194961 in words is "three trillion, nine hundred twenty-seven billion, two hundred ten million, one hundred ninety-four thousand, nine hundred sixty-one".