38781285218 has 16 divisors (see below), whose sum is σ = 63067145400. Its totient is φ = 17778925056.

The previous prime is 38781285217. The next prime is 38781285227. The reversal of 38781285218 is 81258218783.

It can be written as a sum of positive squares in 4 ways, for example, as 12066363409 + 26714921809 = 109847^2 + 163447^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 38781285218.

It is not an unprimeable number, because it can be changed into a prime (38781285211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5001455 + ... + 5009202.

Almost surely, 2^38781285218 is an apocalyptic number.

38781285218 is a deficient number, since it is larger than the sum of its proper divisors (24285860182).

38781285218 is a wasteful number, since it uses less digits than its factorization.

38781285218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010821.

The product of its digits is 1720320, while the sum is 53.

The spelling of 38781285218 in words is "thirty-eight billion, seven hundred eighty-one million, two hundred eighty-five thousand, two hundred eighteen".