38750681 has 2 divisors, whose sum is σ = 38750682. Its totient is φ = 38750680.

The previous prime is 38750629. The next prime is 38750687. The reversal of 38750681 is 18605783.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 18139081 = 4540^2 + 4259^2 .

It is a cyclic number.

It is not a de Polignac number, because 38750681 - 2¹⁸ = 38488537 is a prime.

It is a super-2 number, since 2×38750681² = 3003230555927522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38750687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19375340 + 19375341.

It is an arithmetic number, because the mean of its divisors is an integer number (19375341).

Almost surely, 2^38750681 is an apocalyptic number.

It is an amenable number.

38750681 is a deficient number, since it is larger than the sum of its proper divisors (1).

38750681 is an equidigital number, since it uses as much as digits as its factorization.

38750681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 38750681 is about 6225.0044979903. The cubic root of 38750681 is about 338.3969549333.

The spelling of 38750681 in words is "thirty-eight million, seven hundred fifty thousand, six hundred eighty-one".