7861339812 has 48 divisors (see below), whose sum is σ = 18420696000. Its totient is φ = 2609392512.

The previous prime is 7861339799. The next prime is 7861339823. The reversal of 7861339812 is 2189331687.

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, 3334138 + ... + 3336494.

It is an arithmetic number, because the mean of its divisors is an integer number (383764500).

Almost surely, 2^7861339812 is an apocalyptic number.

It is an amenable number.

7861339812 is an abundant number, since it is smaller than the sum of its proper divisors (10559356188).

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

7861339812 is a wasteful number, since it uses less digits than its factorization.

7861339812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3418 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The square root of 7861339812 is about 88664.1969004400. The cubic root of 7861339812 is about 1988.3775747798.

The spelling of 7861339812 in words is "seven billion, eight hundred sixty-one million, three hundred thirty-nine thousand, eight hundred twelve".