1720882993 has 2 divisors, whose sum is σ = 1720882994. Its totient is φ = 1720882992.

The previous prime is 1720882981. The next prime is 1720883009. The reversal of 1720882993 is 3992880271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1718268304 + 2614689 = 41452^2 + 1617^2 .

It is a cyclic number.

It is not a de Polignac number, because 1720882993 - 2⁹ = 1720882481 is a prime.

It is a super-2 number, since 2×1720882993² = 5922876551193276098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1720882973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860441496 + 860441497.

It is an arithmetic number, because the mean of its divisors is an integer number (860441497).

Almost surely, 2^1720882993 is an apocalyptic number.

It is an amenable number.

1720882993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720882993 is an equidigital number, since it uses as much as digits as its factorization.

1720882993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 1720882993 is about 41483.5267666576. The cubic root of 1720882993 is about 1198.3502777289.

The spelling of 1720882993 in words is "one billion, seven hundred twenty million, eight hundred eighty-two thousand, nine hundred ninety-three".