1717945913 has 2 divisors, whose sum is σ = 1717945914. Its totient is φ = 1717945912.

The previous prime is 1717945843. The next prime is 1717945919. The reversal of 1717945913 is 3195497171.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1164379129 + 553566784 = 34123^2 + 23528^2 .

It is a cyclic number.

It is not a de Polignac number, because 1717945913 - 2¹⁴ = 1717929529 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1717945919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 858972956 + 858972957.

It is an arithmetic number, because the mean of its divisors is an integer number (858972957).

Almost surely, 2^1717945913 is an apocalyptic number.

It is an amenable number.

1717945913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1717945913 is an equidigital number, since it uses as much as digits as its factorization.

1717945913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 238140, while the sum is 47.

The square root of 1717945913 is about 41448.1110908567. Note that the first 3 decimals coincide. The cubic root of 1717945913 is about 1197.6681366592.

The spelling of 1717945913 in words is "one billion, seven hundred seventeen million, nine hundred forty-five thousand, nine hundred thirteen".