38994491768993 has 2 divisors, whose sum is σ = 38994491768994. Its totient is φ = 38994491768992.

The previous prime is 38994491768971. The next prime is 38994491769011. The reversal of 38994491768993 is 39986719449983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37998631475809 + 995860293184 = 6164303^2 + 997928^2 .

It is a cyclic number.

It is not a de Polignac number, because 38994491768993 - 2¹⁴ = 38994491752609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38994491768899 and 38994491768908.

It is not a weakly prime, because it can be changed into another prime (38994421768993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19497245884496 + 19497245884497.

It is an arithmetic number, because the mean of its divisors is an integer number (19497245884497).

Almost surely, 2^{38994491768993} is an apocalyptic number.

It is an amenable number.

38994491768993 is a deficient number, since it is larger than the sum of its proper divisors (1).

38994491768993 is an equidigital number, since it uses as much as digits as its factorization.

38994491768993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22856214528, while the sum is 89.

The spelling of 38994491768993 in words is "thirty-eight trillion, nine hundred ninety-four billion, four hundred ninety-one million, seven hundred sixty-eight thousand, nine hundred ninety-three".