38340647186 has 4 divisors (see below), whose sum is σ = 57510970782. Its totient is φ = 19170323592.

The previous prime is 38340647183. The next prime is 38340647227. The reversal of 38340647186 is 68174604383.

38340647186 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 only one way, i.e., 36379840225 + 1960806961 = 190735^2 + 44281^2 .

It is not an unprimeable number, because it can be changed into a prime (38340647183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9585161795 + ... + 9585161798.

Almost surely, 2^38340647186 is an apocalyptic number.

38340647186 is a deficient number, since it is larger than the sum of its proper divisors (19170323596).

38340647186 is a wasteful number, since it uses less digits than its factorization.

38340647186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19170323595.

The product of its (nonzero) digits is 2322432, while the sum is 50.

The spelling of 38340647186 in words is "thirty-eight billion, three hundred forty million, six hundred forty-seven thousand, one hundred eighty-six".