38143190209 has 4 divisors (see below), whose sum is σ = 39458472660. Its totient is φ = 36827907760.

The previous prime is 38143190203. The next prime is 38143190227. The reversal of 38143190209 is 90209134183.

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 29737967809 + 8405222400 = 172447^2 + 91680^2 .

It is a cyclic number.

It is not a de Polignac number, because 38143190209 - 2¹⁵ = 38143157441 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38143190203) 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, 657641182 + ... + 657641239.

It is an arithmetic number, because the mean of its divisors is an integer number (9864618165).

Almost surely, 2^38143190209 is an apocalyptic number.

It is an amenable number.

38143190209 is a deficient number, since it is larger than the sum of its proper divisors (1315282451).

38143190209 is a wasteful number, since it uses less digits than its factorization.

38143190209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1315282450.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 38143190209 in words is "thirty-eight billion, one hundred forty-three million, one hundred ninety thousand, two hundred nine".