3871249838 has 24 divisors (see below), whose sum is σ = 6108048408. Its totient is φ = 1837845072.

The previous prime is 3871249831. The next prime is 3871249841. The reversal of 3871249838 is 8389421783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871249838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3871249831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3509195 + ... + 3510297.

It is an arithmetic number, because the mean of its divisors is an integer number (254502017).

Almost surely, 2^3871249838 is an apocalyptic number.

3871249838 is a deficient number, since it is larger than the sum of its proper divisors (2236798570).

3871249838 is an equidigital number, since it uses as much as digits as its factorization.

3871249838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288 (or 1185 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 3871249838 is about 62219.3686724640. The cubic root of 3871249838 is about 1570.1834664632.

The spelling of 3871249838 in words is "three billion, eight hundred seventy-one million, two hundred forty-nine thousand, eight hundred thirty-eight".