38145567209 has 4 divisors (see below), whose sum is σ = 38178652116. Its totient is φ = 38112482304.

The previous prime is 38145567197. The next prime is 38145567263. The reversal of 38145567209 is 90276554183.

It is a happy number.

38145567209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 21375317209 + 16770250000 = 146203^2 + 129500^2 .

It is a cyclic number.

It is not a de Polignac number, because 38145567209 - 2⁴ = 38145567193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38145567289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16540724 + ... + 16543029.

It is an arithmetic number, because the mean of its divisors is an integer number (9544663029).

It is a 1-persistent number, because it is pandigital, but 2⋅38145567209 = 76291134418 is not.

Almost surely, 2^38145567209 is an apocalyptic number.

It is an amenable number.

38145567209 is a deficient number, since it is larger than the sum of its proper divisors (33084907).

38145567209 is a wasteful number, since it uses less digits than its factorization.

38145567209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33084906.

The product of its (nonzero) digits is 1814400, while the sum is 50.

The spelling of 38145567209 in words is "thirty-eight billion, one hundred forty-five million, five hundred sixty-seven thousand, two hundred nine".