6319915812 has 432 divisors, whose sum is σ = 20875825152. Its totient is φ = 1635526080.

The previous prime is 6319915759. The next prime is 6319915897. The reversal of 6319915812 is 2185199136.

6319915812 is a `hidden beast` number, since 63 + 1 + 9 + 9 + 1 + 581 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 76143523 + ... + 76143605.

Almost surely, 2^6319915812 is an apocalyptic number.

6319915812 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6319915812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10437912576).

6319915812 is an abundant number, since it is smaller than the sum of its proper divisors (14555909340).

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

6319915812 is a wasteful number, since it uses less digits than its factorization.

6319915812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178 (or 145 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 6319915812 is about 79497.8981608948. The cubic root of 6319915812 is about 1848.8588835229.

The spelling of 6319915812 in words is "six billion, three hundred nineteen million, nine hundred fifteen thousand, eight hundred twelve".