38509497109 has 2 divisors, whose sum is σ = 38509497110. Its totient is φ = 38509497108.

The previous prime is 38509497101. The next prime is 38509497203. The reversal of 38509497109 is 90179490583.

38509497109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38030850225 + 478646884 = 195015^2 + 21878^2 .

It is a cyclic number.

It is not a de Polignac number, because 38509497109 - 2³ = 38509497101 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38509497109.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38509497101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19254748554 + 19254748555.

It is an arithmetic number, because the mean of its divisors is an integer number (19254748555).

Almost surely, 2^38509497109 is an apocalyptic number.

It is an amenable number.

38509497109 is a deficient number, since it is larger than the sum of its proper divisors (1).

38509497109 is an equidigital number, since it uses as much as digits as its factorization.

38509497109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 38509497109 in words is "thirty-eight billion, five hundred nine million, four hundred ninety-seven thousand, one hundred nine".