1723917497 has 2 divisors, whose sum is σ = 1723917498. Its totient is φ = 1723917496.

The previous prime is 1723917479. The next prime is 1723917509. The reversal of 1723917497 is 7947193271.

Together with previous prime (1723917479) 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., 1349533696 + 374383801 = 36736^2 + 19349^2 .

It is an emirp because it is prime and its reverse (7947193271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1723917497 - 2⁸ = 1723917241 is a prime.

It is not a weakly prime, because it can be changed into another prime (1723917407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 861958748 + 861958749.

It is an arithmetic number, because the mean of its divisors is an integer number (861958749).

Almost surely, 2^1723917497 is an apocalyptic number.

It is an amenable number.

1723917497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1723917497 is an equidigital number, since it uses as much as digits as its factorization.

1723917497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 50.

The square root of 1723917497 is about 41520.0854647483. The cubic root of 1723917497 is about 1199.0542309540.

The spelling of 1723917497 in words is "one billion, seven hundred twenty-three million, nine hundred seventeen thousand, four hundred ninety-seven".