1963820459 has 2 divisors, whose sum is σ = 1963820460. Its totient is φ = 1963820458.

The previous prime is 1963820401. The next prime is 1963820471. The reversal of 1963820459 is 9540283691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1963820459 - 2⁸ = 1963820203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1963820479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 981910229 + 981910230.

It is an arithmetic number, because the mean of its divisors is an integer number (981910230).

Almost surely, 2^1963820459 is an apocalyptic number.

1963820459 is a deficient number, since it is larger than the sum of its proper divisors (1).

1963820459 is an equidigital number, since it uses as much as digits as its factorization.

1963820459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 466560, while the sum is 47.

The square root of 1963820459 is about 44315.0139230487. The cubic root of 1963820459 is about 1252.2775456284.

The spelling of 1963820459 in words is "one billion, nine hundred sixty-three million, eight hundred twenty thousand, four hundred fifty-nine".