1720993199 has 2 divisors, whose sum is σ = 1720993200. Its totient is φ = 1720993198.

The previous prime is 1720993151. The next prime is 1720993213. The reversal of 1720993199 is 9913990271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720993199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720993399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860496599 + 860496600.

It is an arithmetic number, because the mean of its divisors is an integer number (860496600).

Almost surely, 2^1720993199 is an apocalyptic number.

1720993199 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720993199 is an equidigital number, since it uses as much as digits as its factorization.

1720993199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 1720993199 is about 41484.8550557911. The cubic root of 1720993199 is about 1198.3758581184.

The spelling of 1720993199 in words is "one billion, seven hundred twenty million, nine hundred ninety-three thousand, one hundred ninety-nine".