1720613099 has 2 divisors, whose sum is σ = 1720613100. Its totient is φ = 1720613098.

The previous prime is 1720613071. The next prime is 1720613113. The reversal of 1720613099 is 9903160271.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9903160271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1720613099 - 2¹² = 1720609003 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1720613009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860306549 + 860306550.

It is an arithmetic number, because the mean of its divisors is an integer number (860306550).

Almost surely, 2^1720613099 is an apocalyptic number.

1720613099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720613099 is an equidigital number, since it uses as much as digits as its factorization.

1720613099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 1720613099 is about 41480.2736128874. The cubic root of 1720613099 is about 1198.2876268571.

The spelling of 1720613099 in words is "one billion, seven hundred twenty million, six hundred thirteen thousand, ninety-nine".