6381951382 has 32 divisors (see below), whose sum is σ = 10323371520. Its totient is φ = 2949216480.

The previous prime is 6381951349. The next prime is 6381951397. The reversal of 6381951382 is 2831591836.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1800532 + ... + 1804072.

It is an arithmetic number, because the mean of its divisors is an integer number (322605360).

Almost surely, 2^6381951382 is an apocalyptic number.

6381951382 is a deficient number, since it is larger than the sum of its proper divisors (3941420138).

6381951382 is a wasteful number, since it uses less digits than its factorization.

6381951382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4708.

The product of its digits is 311040, while the sum is 46.

The square root of 6381951382 is about 79887.1164957154. The cubic root of 6381951382 is about 1854.8885930724. Note that the first 3 decimals are identical.

The spelling of 6381951382 in words is "six billion, three hundred eighty-one million, nine hundred fifty-one thousand, three hundred eighty-two".