3281680393 has 2 divisors, whose sum is σ = 3281680394. Its totient is φ = 3281680392.

The previous prime is 3281680387. The next prime is 3281680453. The reversal of 3281680393 is 3930861823.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2661321744 + 620358649 = 51588^2 + 24907^2 .

It is a cyclic number.

It is not a de Polignac number, because 3281680393 - 2²⁹ = 2744809481 is a prime.

It is not a weakly prime, because it can be changed into another prime (3281680313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1640840196 + 1640840197.

It is an arithmetic number, because the mean of its divisors is an integer number (1640840197).

Almost surely, 2^3281680393 is an apocalyptic number.

It is an amenable number.

3281680393 is a deficient number, since it is larger than the sum of its proper divisors (1).

3281680393 is an equidigital number, since it uses as much as digits as its factorization.

3281680393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 3281680393 is about 57285.9528418617. The cubic root of 3281680393 is about 1486.0454560780.

The spelling of 3281680393 in words is "three billion, two hundred eighty-one million, six hundred eighty thousand, three hundred ninety-three".