7891329816 has 48 divisors (see below), whose sum is σ = 21390150600. Its totient is φ = 2628252672.

The previous prime is 7891329799. The next prime is 7891329839. The reversal of 7891329816 is 6189231987.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42595 + ... + 132653.

Almost surely, 2^7891329816 is an apocalyptic number.

It is an amenable number.

7891329816 is an abundant number, since it is smaller than the sum of its proper divisors (13498820784).

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

7891329816 is a wasteful number, since it uses less digits than its factorization.

7891329816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91288 (or 91281 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 7891329816 is about 88833.1571880680. The cubic root of 7891329816 is about 1990.9028348655.

The spelling of 7891329816 in words is "seven billion, eight hundred ninety-one million, three hundred twenty-nine thousand, eight hundred sixteen".