1720610413 has 2 divisors, whose sum is σ = 1720610414. Its totient is φ = 1720610412.

The previous prime is 1720610393. The next prime is 1720610431. The reversal of 1720610413 is 3140160271.

Together with next prime (1720610431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 886729284 + 833881129 = 29778^2 + 28877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1720610413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1720610483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860305206 + 860305207.

It is an arithmetic number, because the mean of its divisors is an integer number (860305207).

Almost surely, 2^1720610413 is an apocalyptic number.

It is an amenable number.

1720610413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1720610413 is an equidigital number, since it uses as much as digits as its factorization.

1720610413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1720610413 is about 41480.2412360391. The cubic root of 1720610413 is about 1198.2870033192.

Adding to 1720610413 its reverse (3140160271), we get a palindrome (4860770684).

The spelling of 1720610413 in words is "one billion, seven hundred twenty million, six hundred ten thousand, four hundred thirteen".