4906357661 has 2 divisors, whose sum is σ = 4906357662. Its totient is φ = 4906357660.

The previous prime is 4906357639. The next prime is 4906357681. The reversal of 4906357661 is 1667536094.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3882037636 + 1024320025 = 62306^2 + 32005^2 .

It is a cyclic number.

It is not a de Polignac number, because 4906357661 - 2¹⁴ = 4906341277 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4906357681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2453178830 + 2453178831.

It is an arithmetic number, because the mean of its divisors is an integer number (2453178831).

Almost surely, 2^4906357661 is an apocalyptic number.

It is an amenable number.

4906357661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4906357661 is an equidigital number, since it uses as much as digits as its factorization.

4906357661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 47.

The square root of 4906357661 is about 70045.3971435668. The cubic root of 4906357661 is about 1699.2335254078.

The spelling of 4906357661 in words is "four billion, nine hundred six million, three hundred fifty-seven thousand, six hundred sixty-one".