7892816881 has 8 divisors (see below), whose sum is σ = 7964742240. Its totient is φ = 7820928192.

The previous prime is 7892816861. The next prime is 7892816903. The reversal of 7892816881 is 1886182987.

7892816881 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7892816881 - 2⁷ = 7892816753 is a prime.

It is a super-2 number, since 2×7892816881² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7892816861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613210 + ... + 625948.

It is an arithmetic number, because the mean of its divisors is an integer number (995592780).

Almost surely, 2^7892816881 is an apocalyptic number.

It is an amenable number.

7892816881 is a deficient number, since it is larger than the sum of its proper divisors (71925359).

7892816881 is a wasteful number, since it uses less digits than its factorization.

7892816881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18335.

The product of its digits is 3096576, while the sum is 58.

The square root of 7892816881 is about 88841.5267822430. The cubic root of 7892816881 is about 1991.0278841725.

The spelling of 7892816881 in words is "seven billion, eight hundred ninety-two million, eight hundred sixteen thousand, eight hundred eighty-one".