3981127238 has 12 divisors (see below), whose sum is σ = 6563925060. Its totient is φ = 1809603180.

The previous prime is 3981127223. The next prime is 3981127259. The reversal of 3981127238 is 8327211893.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 8225228 + ... + 8225711.

It is an arithmetic number, because the mean of its divisors is an integer number (546993755).

Almost surely, 2^3981127238 is an apocalyptic number.

3981127238 is a deficient number, since it is larger than the sum of its proper divisors (2582797822).

3981127238 is a wasteful number, since it uses less digits than its factorization.

3981127238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16450963 (or 16450952 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 3981127238 is about 63096.1745116136. The cubic root of 3981127238 is about 1584.9005617177.

The spelling of 3981127238 in words is "three billion, nine hundred eighty-one million, one hundred twenty-seven thousand, two hundred thirty-eight".