1720316963 has 2 divisors, whose sum is σ = 1720316964. Its totient is φ = 1720316962.

The previous prime is 1720316903. The next prime is 1720316999. The reversal of 1720316963 is 3696130271.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1720316963 - 2²⁰ = 1719268387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1720316903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860158481 + 860158482.

It is an arithmetic number, because the mean of its divisors is an integer number (860158482).

Almost surely, 2^1720316963 is an apocalyptic number.

1720316963 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720316963 is an equidigital number, since it uses as much as digits as its factorization.

1720316963 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 1720316963 is about 41476.7038589134. The cubic root of 1720316963 is about 1198.2188768546.

The spelling of 1720316963 in words is "one billion, seven hundred twenty million, three hundred sixteen thousand, nine hundred sixty-three".