38893735757609 has 2 divisors, whose sum is σ = 38893735757610. Its totient is φ = 38893735757608.

The previous prime is 38893735757563. The next prime is 38893735757651. The reversal of 38893735757609 is 90675753739883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36320775395584 + 2572960362025 = 6026672^2 + 1604045^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38893735757609 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 (38893735757659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19446867878804 + 19446867878805.

It is an arithmetic number, because the mean of its divisors is an integer number (19446867878805).

Almost surely, 2^{38893735757609} is an apocalyptic number.

It is an amenable number.

38893735757609 is a deficient number, since it is larger than the sum of its proper divisors (1).

38893735757609 is an equidigital number, since it uses as much as digits as its factorization.

38893735757609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7201353600, while the sum is 80.

The spelling of 38893735757609 in words is "thirty-eight trillion, eight hundred ninety-three billion, seven hundred thirty-five million, seven hundred fifty-seven thousand, six hundred nine".