1745568397 has 2 divisors, whose sum is σ = 1745568398. Its totient is φ = 1745568396.

The previous prime is 1745568389. The next prime is 1745568413. The reversal of 1745568397 is 7938655471.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1546927561 + 198640836 = 39331^2 + 14094^2 .

It is a cyclic number.

It is not a de Polignac number, because 1745568397 - 2³ = 1745568389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1745566397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 872784198 + 872784199.

It is an arithmetic number, because the mean of its divisors is an integer number (872784199).

Almost surely, 2^1745568397 is an apocalyptic number.

It is an amenable number.

1745568397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1745568397 is an equidigital number, since it uses as much as digits as its factorization.

1745568397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6350400, while the sum is 55.

The square root of 1745568397 is about 41779.9999640977. Note that the first 4 decimals coincide. The cubic root of 1745568397 is about 1204.0530537819.

The spelling of 1745568397 in words is "one billion, seven hundred forty-five million, five hundred sixty-eight thousand, three hundred ninety-seven".