2013510661 has 2 divisors, whose sum is σ = 2013510662. Its totient is φ = 2013510660.

The previous prime is 2013510619. The next prime is 2013510671. The reversal of 2013510661 is 1660153102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2000772900 + 12737761 = 44730^2 + 3569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013510661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2013510671) 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, 1006755330 + 1006755331.

It is an arithmetic number, because the mean of its divisors is an integer number (1006755331).

Almost surely, 2^2013510661 is an apocalyptic number.

It is an amenable number.

2013510661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2013510661 is an equidigital number, since it uses as much as digits as its factorization.

2013510661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 2013510661 is about 44872.1590855622. The cubic root of 2013510661 is about 1262.7517463666.

Adding to 2013510661 its reverse (1660153102), we get a palindrome (3673663763).

The spelling of 2013510661 in words is "two billion, thirteen million, five hundred ten thousand, six hundred sixty-one".