1611708653 has 2 divisors, whose sum is σ = 1611708654. Its totient is φ = 1611708652.

The previous prime is 1611708607. The next prime is 1611708667. The reversal of 1611708653 is 3568071161.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1189077289 + 422631364 = 34483^2 + 20558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611708653 - 2¹² = 1611704557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611708353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805854326 + 805854327.

It is an arithmetic number, because the mean of its divisors is an integer number (805854327).

Almost surely, 2^1611708653 is an apocalyptic number.

It is an amenable number.

1611708653 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611708653 is an equidigital number, since it uses as much as digits as its factorization.

1611708653 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1611708653 is about 40146.0913788628. The cubic root of 1611708653 is about 1172.4531898031.

The spelling of 1611708653 in words is "one billion, six hundred eleven million, seven hundred eight thousand, six hundred fifty-three".