38623913 has 2 divisors, whose sum is σ = 38623914. Its totient is φ = 38623912.

The previous prime is 38623891. The next prime is 38623931. The reversal of 38623913 is 31932683.

38623913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (38623931) 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., 38588944 + 34969 = 6212^2 + 187^2 .

It is a cyclic number.

It is not a de Polignac number, because 38623913 - 2⁸ = 38623657 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 (38623973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19311956 + 19311957.

It is an arithmetic number, because the mean of its divisors is an integer number (19311957).

Almost surely, 2^38623913 is an apocalyptic number.

It is an amenable number.

38623913 is a deficient number, since it is larger than the sum of its proper divisors (1).

38623913 is an equidigital number, since it uses as much as digits as its factorization.

38623913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 35.

The square root of 38623913 is about 6214.8139956076. The cubic root of 38623913 is about 338.0275440597.

The spelling of 38623913 in words is "thirty-eight million, six hundred twenty-three thousand, nine hundred thirteen".