3881741218 has 4 divisors (see below), whose sum is σ = 5822611830. Its totient is φ = 1940870608.

The previous prime is 3881741209. The next prime is 3881741219. The reversal of 3881741218 is 8121471883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8121471883 = 7 ⋅1160210269.

It can be written as a sum of positive squares in only one way, i.e., 2788579249 + 1093161969 = 52807^2 + 33063^2 .

It is not an unprimeable number, because it can be changed into a prime (3881741219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 970435303 + ... + 970435306.

Almost surely, 2^3881741218 is an apocalyptic number.

3881741218 is a deficient number, since it is larger than the sum of its proper divisors (1940870612).

3881741218 is a wasteful number, since it uses less digits than its factorization.

3881741218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1940870611.

The product of its digits is 86016, while the sum is 43.

The square root of 3881741218 is about 62303.6212270202. The cubic root of 3881741218 is about 1571.6006257004.

The spelling of 3881741218 in words is "three billion, eight hundred eighty-one million, seven hundred forty-one thousand, two hundred eighteen".