4138187217 has 8 divisors (see below), whose sum is σ = 5595295680. Its totient is φ = 2719935120.

The previous prime is 4138187201. The next prime is 4138187227. The reversal of 4138187217 is 7127818314.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4138187217 - 2⁴ = 4138187201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4138187227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9713842 + ... + 9714267.

It is an arithmetic number, because the mean of its divisors is an integer number (699411960).

Almost surely, 2^4138187217 is an apocalyptic number.

It is an amenable number.

4138187217 is a deficient number, since it is larger than the sum of its proper divisors (1457108463).

4138187217 is a wasteful number, since it uses less digits than its factorization.

4138187217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19428183.

The product of its digits is 75264, while the sum is 42.

The square root of 4138187217 is about 64328.7433189861. The cubic root of 4138187217 is about 1605.4743753605.

The spelling of 4138187217 in words is "four billion, one hundred thirty-eight million, one hundred eighty-seven thousand, two hundred seventeen".