3521610641 has 2 divisors, whose sum is σ = 3521610642. Its totient is φ = 3521610640.

The previous prime is 3521610629. The next prime is 3521610649. The reversal of 3521610641 is 1460161253.

It is a happy number.

3521610641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2617345600 + 904265041 = 51160^2 + 30071^2 .

It is a cyclic number.

It is not a de Polignac number, because 3521610641 - 2¹⁰ = 3521609617 is a prime.

It is not a weakly prime, because it can be changed into another prime (3521610649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1760805320 + 1760805321.

It is an arithmetic number, because the mean of its divisors is an integer number (1760805321).

Almost surely, 2^3521610641 is an apocalyptic number.

It is an amenable number.

3521610641 is a deficient number, since it is larger than the sum of its proper divisors (1).

3521610641 is an equidigital number, since it uses as much as digits as its factorization.

3521610641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 3521610641 is about 59343.1600186576. The cubic root of 3521610641 is about 1521.4129637424.

Adding to 3521610641 its reverse (1460161253), we get a palindrome (4981771894).

The spelling of 3521610641 in words is "three billion, five hundred twenty-one million, six hundred ten thousand, six hundred forty-one".