6381895312 has 20 divisors (see below), whose sum is σ = 13316070460. Its totient is φ = 2945490048.

The previous prime is 6381895297. The next prime is 6381895327. The reversal of 6381895312 is 2135981836.

It is an interprime number because it is at equal distance from previous prime (6381895297) and next prime (6381895327).

It can be written as a sum of positive squares in 2 ways, for example, as 2814939136 + 3566956176 = 53056^2 + 59724^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15340887 + ... + 15341302.

It is an arithmetic number, because the mean of its divisors is an integer number (665803523).

Almost surely, 2^6381895312 is an apocalyptic number.

It is an amenable number.

6381895312 is an abundant number, since it is smaller than the sum of its proper divisors (6934175148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6381895312 is a wasteful number, since it uses less digits than its factorization.

6381895312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30682210 (or 30682204 counting only the distinct ones).

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

The square root of 6381895312 is about 79886.7655622632. The cubic root of 6381895312 is about 1854.8831608829.

The spelling of 6381895312 in words is "six billion, three hundred eighty-one million, eight hundred ninety-five thousand, three hundred twelve".