38093744681 has 2 divisors, whose sum is σ = 38093744682. Its totient is φ = 38093744680.

The previous prime is 38093744671. The next prime is 38093744699. The reversal of 38093744681 is 18644739083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37826749081 + 266995600 = 194491^2 + 16340^2 .

It is a cyclic number.

It is not a de Polignac number, because 38093744681 - 2⁶ = 38093744617 is a prime.

It is a super-2 number, since 2×38093744681² (a number of 22 digits) contains 22 as substring.

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 (38093744671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19046872340 + 19046872341.

It is an arithmetic number, because the mean of its divisors is an integer number (19046872341).

Almost surely, 2^38093744681 is an apocalyptic number.

It is an amenable number.

38093744681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38093744681 is an equidigital number, since it uses as much as digits as its factorization.

38093744681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3483648, while the sum is 53.

The spelling of 38093744681 in words is "thirty-eight billion, ninety-three million, seven hundred forty-four thousand, six hundred eighty-one".