7931727812 has 12 divisors (see below), whose sum is σ = 13881189420. Its totient is φ = 3965673696.

The previous prime is 7931727809. The next prime is 7931727827. The reversal of 7931727812 is 2187271397.

It can be written as a sum of positive squares in 2 ways, for example, as 2914272256 + 5017455556 = 53984^2 + 70834^2 .

It is a super-3 number, since 3×7931727812³ (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91358 + ... + 155594.

It is an arithmetic number, because the mean of its divisors is an integer number (1156765785).

Almost surely, 2^7931727812 is an apocalyptic number.

It is an amenable number.

7931727812 is a deficient number, since it is larger than the sum of its proper divisors (5949461608).

7931727812 is a wasteful number, since it uses less digits than its factorization.

7931727812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95110 (or 95108 counting only the distinct ones).

The product of its digits is 296352, while the sum is 47.

The square root of 7931727812 is about 89060.2482143408. The cubic root of 7931727812 is about 1994.2943894827.

The spelling of 7931727812 in words is "seven billion, nine hundred thirty-one million, seven hundred twenty-seven thousand, eight hundred twelve".