6381870840 has 96 divisors (see below), whose sum is σ = 20946556800. Its totient is φ = 1684972800.

The previous prime is 6381870827. The next prime is 6381870853. The reversal of 6381870840 is 480781836.

6381870840 is a `hidden beast` number, since 638 + 1 + 8 + 7 + 0 + 8 + 4 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (6381870827) and next prime (6381870853).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51400 + ... + 124119.

It is an arithmetic number, because the mean of its divisors is an integer number (218193300).

Almost surely, 2^6381870840 is an apocalyptic number.

6381870840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6381870840 is an abundant number, since it is smaller than the sum of its proper divisors (14564685960).

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

6381870840 is a wasteful number, since it uses less digits than its factorization.

6381870840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175637 (or 175630 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 6381870840 is about 79886.6123953194. The cubic root of 6381870840 is about 1854.8807899698.

The spelling of 6381870840 in words is "six billion, three hundred eighty-one million, eight hundred seventy thousand, eight hundred forty".