38509073 has 2 divisors, whose sum is σ = 38509074. Its totient is φ = 38509072.

The previous prime is 38509049. The next prime is 38509091. The reversal of 38509073 is 37090583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22771984 + 15737089 = 4772^2 + 3967^2 .

It is a cyclic number.

It is not a de Polignac number, because 38509073 - 2²² = 34314769 is a prime.

It is not a weakly prime, because it can be changed into another prime (38509043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19254536 + 19254537.

It is an arithmetic number, because the mean of its divisors is an integer number (19254537).

Almost surely, 2^38509073 is an apocalyptic number.

It is an amenable number.

38509073 is a deficient number, since it is larger than the sum of its proper divisors (1).

38509073 is an equidigital number, since it uses as much as digits as its factorization.

38509073 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 38509073 is about 6205.5679031012. The cubic root of 38509073 is about 337.6921937784.

The spelling of 38509073 in words is "thirty-eight million, five hundred nine thousand, seventy-three".