7892016881 has 12 divisors (see below), whose sum is σ = 9271411380. Its totient is φ = 6697605600.

The previous prime is 7892016851. The next prime is 7892016889. The reversal of 7892016881 is 1886102987.

It can be written as a sum of positive squares in 2 ways, for example, as 7748400625 + 143616256 = 88025^2 + 11984^2 .

It is not a de Polignac number, because 7892016881 - 2⁶ = 7892016817 is a prime.

It is a super-2 number, since 2×7892016881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7892016889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 792386 + ... + 802283.

It is an arithmetic number, because the mean of its divisors is an integer number (772617615).

Almost surely, 2^7892016881 is an apocalyptic number.

It is an amenable number.

7892016881 is a deficient number, since it is larger than the sum of its proper divisors (1379394499).

7892016881 is a wasteful number, since it uses less digits than its factorization.

7892016881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594784 (or 1594777 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 50.

The square root of 7892016881 is about 88837.0242691638. The cubic root of 7892016881 is about 1990.9606130428.

The spelling of 7892016881 in words is "seven billion, eight hundred ninety-two million, sixteen thousand, eight hundred eighty-one".