3291337561 has 2 divisors, whose sum is σ = 3291337562. Its totient is φ = 3291337560.

The previous prime is 3291337541. The next prime is 3291337583. The reversal of 3291337561 is 1657331923.

3291337561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3167438400 + 123899161 = 56280^2 + 11131^2 .

It is a cyclic number.

It is not a de Polignac number, because 3291337561 - 2²⁵ = 3257783129 is a prime.

It is not a weakly prime, because it can be changed into another prime (3291337531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645668780 + 1645668781.

It is an arithmetic number, because the mean of its divisors is an integer number (1645668781).

Almost surely, 2^3291337561 is an apocalyptic number.

It is an amenable number.

3291337561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3291337561 is an equidigital number, since it uses as much as digits as its factorization.

3291337561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 3291337561 is about 57370.1800676972. The cubic root of 3291337561 is about 1487.5017157526.

The spelling of 3291337561 in words is "three billion, two hundred ninety-one million, three hundred thirty-seven thousand, five hundred sixty-one".