3531561629 has 2 divisors, whose sum is σ = 3531561630. Its totient is φ = 3531561628.

The previous prime is 3531561619. The next prime is 3531561653. The reversal of 3531561629 is 9261651353.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3132640900 + 398920729 = 55970^2 + 19973^2 .

It is an emirp because it is prime and its reverse (9261651353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3531561629 - 2⁴ = 3531561613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3531561619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765780814 + 1765780815.

It is an arithmetic number, because the mean of its divisors is an integer number (1765780815).

Almost surely, 2^3531561629 is an apocalyptic number.

It is an amenable number.

3531561629 is a deficient number, since it is larger than the sum of its proper divisors (1).

3531561629 is an equidigital number, since it uses as much as digits as its factorization.

3531561629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145800, while the sum is 41.

The square root of 3531561629 is about 59426.9436282904. The cubic root of 3531561629 is about 1522.8446310595.

The spelling of 3531561629 in words is "three billion, five hundred thirty-one million, five hundred sixty-one thousand, six hundred twenty-nine".