38540413 has 2 divisors, whose sum is σ = 38540414. Its totient is φ = 38540412.

The previous prime is 38540389. The next prime is 38540431. The reversal of 38540413 is 31404583.

Together with next prime (38540431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25130169 + 13410244 = 5013^2 + 3662^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38540413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38540443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19270206 + 19270207.

It is an arithmetic number, because the mean of its divisors is an integer number (19270207).

Almost surely, 2^38540413 is an apocalyptic number.

It is an amenable number.

38540413 is a deficient number, since it is larger than the sum of its proper divisors (1).

38540413 is an equidigital number, since it uses as much as digits as its factorization.

38540413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 38540413 is about 6208.0925411917. The cubic root of 38540413 is about 337.7837774219.

Adding to 38540413 its reverse (31404583), we get a palindrome (69944996).

The spelling of 38540413 in words is "thirty-eight million, five hundred forty thousand, four hundred thirteen".