38395226809 has 9 divisors (see below), whose sum is σ = 40526315823. Its totient is φ = 36370898352.

The previous prime is 38395226789. The next prime is 38395226833. The reversal of 38395226809 is 90862259383.

The square root of 38395226809 is 195947.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 15796719225 + 22598507584 = 125685^2 + 150328^2 .

It is not a de Polignac number, because 38395226809 - 2⁵ = 38395226777 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38395226809.

It is not an unprimeable number, because it can be changed into a prime (38395229809) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3717837 + ... + 3728149.

Almost surely, 2^38395226809 is an apocalyptic number.

38395226809 is the 195947-th square number.

38395226809 is the 97974-th centered octagonal number.

It is an amenable number.

38395226809 is a deficient number, since it is larger than the sum of its proper divisors (2131089014).

38395226809 is an frugal number, since it uses more digits than its factorization.

38395226809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20664 (or 10332 counting only the distinct ones).

The product of its (nonzero) digits is 5598720, while the sum is 55.

The spelling of 38395226809 in words is "thirty-eight billion, three hundred ninety-five million, two hundred twenty-six thousand, eight hundred nine".