38535509 has 2 divisors, whose sum is σ = 38535510. Its totient is φ = 38535508.

The previous prime is 38535503. The next prime is 38535521. The reversal of 38535509 is 90553583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37332100 + 1203409 = 6110^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 38535509 - 2¹² = 38531413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38535503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19267754 + 19267755.

It is an arithmetic number, because the mean of its divisors is an integer number (19267755).

Almost surely, 2^38535509 is an apocalyptic number.

It is an amenable number.

38535509 is a deficient number, since it is larger than the sum of its proper divisors (1).

38535509 is an equidigital number, since it uses as much as digits as its factorization.

38535509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 38535509 is about 6207.6975602875. The cubic root of 38535509 is about 337.7694499340.

The spelling of 38535509 in words is "thirty-eight million, five hundred thirty-five thousand, five hundred nine".