3889448138 has 4 divisors (see below), whose sum is σ = 5834172210. Its totient is φ = 1944724068.

The previous prime is 3889448063. The next prime is 3889448179. The reversal of 3889448138 is 8318449883.

3889448138 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, and also an emirpimes, since its reverse is a distinct semiprime: 8318449883 = 31 ⋅268337093.

It can be written as a sum of positive squares in only one way, i.e., 2983016689 + 906431449 = 54617^2 + 30107^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972362033 + ... + 972362036.

Almost surely, 2^3889448138 is an apocalyptic number.

3889448138 is a deficient number, since it is larger than the sum of its proper divisors (1944724072).

3889448138 is a wasteful number, since it uses less digits than its factorization.

3889448138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944724071.

The product of its digits is 5308416, while the sum is 56.

The square root of 3889448138 is about 62365.4402533968. The cubic root of 3889448138 is about 1572.6400383827.

The spelling of 3889448138 in words is "three billion, eight hundred eighty-nine million, four hundred forty-eight thousand, one hundred thirty-eight".